Merge branch 'master' into dev/check_ssh-patches

21 files changed, 435 insertions, 289 deletions

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..282063c
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "04:00"
+    pull-request-branch-name:
+      separator: "-"
+    open-pull-requests-limit: 10
diff --git a/.github/prepare_debian.sh b/.github/prepare_debian.sh
index 4021c10..d8a76da 100755
--- a/.github/prepare_debian.sh
+++ b/.github/prepare_debian.sh
@@ -11,21 +11,51 @@ if [ $(lsb_release -is) = "Debian" ]; then
   apt-add-repository non-free
   apt-get update
 fi
-apt-get -y install perl autotools-dev libdbi-dev libldap2-dev libpq-dev libradcli-dev libnet-snmp-perl procps
-apt-get -y install libdbi0-dev libdbd-sqlite3 libssl-dev dnsutils snmp-mibs-downloader libsnmp-perl snmpd
-apt-get -y install fping snmp netcat-openbsd smbclient vsftpd apache2 ssl-cert postfix libhttp-daemon-ssl-perl
-apt-get -y install libdbd-sybase-perl libnet-dns-perl
-apt-get -y install slapd ldap-utils
-apt-get -y install gcc make autoconf automake gettext
-apt-get -y install faketime
-apt-get -y install libmonitoring-plugin-perl
-apt-get -y install libcurl4-openssl-dev
-apt-get -y install liburiparser-dev
-apt-get -y install squid
-apt-get -y install openssh-server
-apt-get -y install mariadb-server mariadb-client libmariadb-dev
-apt-get -y install cron iputils-ping
-apt-get -y install iproute2
+apt-get -y install perl \
+        autotools-dev \
+        libdbi-dev \
+        libldap2-dev \
+        libpq-dev \
+        libradcli-dev \
+        libnet-snmp-perl \
+        procps \
+        libdbi0-dev \
+        libdbd-sqlite3 \
+        libssl-dev \
+        dnsutils \
+        snmp-mibs-downloader \
+        libsnmp-perl \
+        snmpd \
+        fping \
+        snmp \
+        netcat-openbsd \
+        smbclient \
+        vsftpd \
+        apache2 \
+        ssl-cert \
+        postfix \
+        libhttp-daemon-ssl-perl \
+        libdbd-sybase-perl \
+        libnet-dns-perl \
+        slapd \
+        ldap-utils \
+        gcc \
+        make \
+        autoconf \
+        automake \
+        gettext \
+        faketime \
+        libmonitoring-plugin-perl \
+        libcurl4-openssl-dev \
+        liburiparser-dev \
+        squid \
+        openssh-server \
+        mariadb-server \
+        mariadb-client \
+        libmariadb-dev \
+        cron \
+        iputils-ping \
+        iproute2
 
 # remove ipv6 interface from hosts
 if [ $(ip addr show | grep "inet6 ::1" | wc -l) -eq "0" ]; then
@@ -37,7 +67,6 @@ ip addr show
 
 cat /etc/hosts
 
-
 # apache
 a2enmod ssl
 a2ensite default-ssl
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index afe6ab4..ab8bfaa 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -39,11 +39,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0f93930..80d49f7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
           #...
     steps:
       - name: Git clone repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       #- name: Setup tmate session, see https://github.com/marketplace/actions/debugging-with-tmate
       #  uses: mxschmitt/action-tmate@v3
       - name: Run the tests on ${{ matrix.distro }}
@@ -40,7 +40,7 @@ jobs:
               ${{ matrix.distro }} \
               /bin/sh -c '${{ matrix.prepare }} && \
                 tools/setup && \
-                ./configure --enable-libtap --with-ipv6=no && \
+                ./configure --enable-libtap  --with-ipv6=no && \
                 make && \
                 make test'
           docker container prune -f
diff --git a/AUTHORS b/AUTHORS
index 2d455be..1b1a036 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -22,3 +22,5 @@ Jan Wagner
 Holger Weiss
 Michael Wirtgen
 Oliver Skibbe
+Andreas Baumann
+Lorenz Kästle
diff --git a/NEWS b/NEWS
index 3790e8a..b674391 100644
--- a/NEWS
+++ b/NEWS
@@ -1,9 +1,115 @@
 This file documents the major additions and syntax changes between releases.
 
-2.4 [...]
+2.3.2 20th Oct 2022
+        GENERAL
+        Use netcat-openbsd for debian explicitely (by @RincewindsHat #1704)
+        Replace egrep with grep -E (by @RincewindsHat #1791)
+        Use silent automake by default (by @RincewindsHat #1747)
+
+        SINGLE PLUGINS
+        check_by_ssh: added option to exit with an warning, if there is output on STDERR (by @nafets #1301)
+        check_by_ssh: Add "-U" flag (#1123). (by @archiecobbs #1774)
+        check_by_ssh: Let ssh decide if a host is valid, enables usage of ssh .config file (by @RincewindsHat #1691)
+        check_curl: Add an option to check_curl to verify the peer certificate & host using the system CA's (by @bazzisoft #1669)
+        check_curl: fixed -ffollow for HTTP/2.0 (Fixes #1685): added major_version parsing to PicoHTTPParser (by @andreasbaumann #1742)
+        check_curl: fixes check_curl: "CRITICAL - Cannot retrieve certificate subject." (by @andreasbaumann #1689)
+        check_curl: fix if http header contains leading spaces (by @sni #1666)
+        check_curl: Update check_curl.c to display a specific human-readable error message where possible (by @bazzisoft #1668)
+        check_curl: verify certificates option should not force SSL to be used (by @bazzisoft #1688)
+        check_disk: Description for -M was the wrong way around (by @RincewindsHat #1746)
+        check_disk: Fixing the stuff that is broken on btrfs (by @waja #1388)
+        check_disk: Fix perfdata for big values for check disk (by @RincewindsHat #1714)
+        check_disk_smb: Add configfile feature (by @Napsty #1402)
+        check_disk_smb: Add timeout (by @cdruee #1770)
+        check_dns: Add --expect-nxdomain (by @Jonny007-MKD #1623)
+        check_dns: split multiple IP addresses passed in one -a argument (by @DerDakon #1649)
+        check_file_age: Make size parameter a little bit more intelligible (by @RincewindsHat #1730)
+        check_fping: Implements 'host-alive' mode (Closes. #1027) (by @waja #1740)
+        check_game: Update Url to qstat (by @RincewindsHat #1725)
+        check_http: changed 'STATE_CRITICAL' to 'STATE_WARNING' for infinite loop (by @xFuture603 #1690)
+        check_http: Increase regexp limit (by @hydrapolic #1566)
+        check_http: Support http redirect (by @waja #1449)
+        check_icmp: buffer offerflow (by @RincewindsHat #1733)
+        check_icmp: delay set_source_ip() until address_family is detected (by @ghciv6 #1735)
+        check_icmp: Fix "Invalid Argument" from sendmsg() under FreeBSD 13.1 and "setsockopt failed" for TTL setting (by @eriksejr #1771)
+        check_icmp: Fix pkt perfdata in check_host mode (by @sjoegren #1721)
+        check_ldap: Allows check_ldap to read password from environment variable (by @mullumaus #1724)
+        check_load: add LOAD prefix to load plugin (by @haraldj #1694)
+        check_load: Display total and scaled load values if check_load scales the values (by number of CPUs by @RincewindsHat #1778)
+        check_log: Missing oldlog now aborts check_log (by @RincewindsHat #1732)
+        check_mailq: Add mailq -C option for config dir or config file (by @leeclemens #1490)
+        check_mailq: Check mailq domain specific warnings (by @RincewindsHat #1731)
+        check_mailq: Fix regexp for nullmailer "mailq" output (by @darksoul42 #1493)
+        check_mysql: fix segfaults with mysql-connector-c #1562 (by @ghciv6 #1644)
+        check_pgsql: add --queryname parameter to check_pgsql (by @datamuc #1741)
+        check_ping: Do not show RTA if no connection was possible (by @RincewindsHat #1697)
+        check_ping: understang ping6 output from iputils package (by @glensc #1412)
+        check_proc: Fix check proc ps detection (by @sni #1712)
+        check_procs: exchange needle and haystack in strstr() for proper st… (by @wolfgangkarall #1654)
+        check_smtp: add -L flag to support LMTP (LHLO instead of HELO/EHLO). (by @ghen2 #1715)
+        check_snmp: Added option for null zero length string exit codes (by @FracKenA #1496)
+        check_snmp: fix performance thresholds when using multiple oids (by @sni #1722)
+        check_snmp fix segfaults (by @adrb #1589)
+        check_snmp: put the "c" (to mark a counter) after the perfdata value (by @lausser #1465)
+        check_swap: fix parsing swap values (by @sni #1780)
+        check_swap: Fix perfdata for check swap (by @RincewindsHat #1707)
+        check_swap: Fix unit for total in perfdata (by @RincewindsHat #1779)
+        check_swap: Handle cached swap (by @mdavranche #1642)
+        check_swap: Small fix to threshold validation and style (indentation) fixes (by @RincewindsHat #1723)
+        check_ups: Fix possible overflow in check_ups (by @phibos #1727)
+        check_uptime: Add option to report uptime in days instead of seconds (by @amotl #1750)
+        check_uptime: Fix/improve output message "Uptime is ..." (by @amotl #1751)
+
+        MULTIPLE PLUGINS
+        check_http, check_curl: added --max-redirs=N option (feature #1684) (by @andreasbaumann #1744)
+        check_http, check_curl: Enhancement --continue-after-certificate (backport from nagios-plugins) (by @andreasbaumann #1762)
+        check_http, check_curl: Remove check_http and check_curl test which are somehow always failing (by @RincewindsHat #1777)
+        check_log, check_oracle, check_sensors: Several fixes shellcheck complaining about (by @waja #1459)
+        sslutils: use chain from client certificates (by @tobiaswiese #1664)
+
+        NON FUNCTIONAL CHANGES
+        Trivial source code whitespace formatting fixes to standard. (by @ziesemer #1424)
+        docs: fix simple typo, conspicuosly -> conspicuously (by @timgates42 #1652)
+        Migrate to GitHub actions (by @jacobbaungard #1686)
+        Point to Icinga Exchange instead of dead Monitoring Exchange (by @RincewindsHat #1737)
+        github actions: fix check_users test case (by @sni #1713)
+        Add CodeQL checks (by @phibos #1682)
+        Fix some QL problems (by @RincewindsHat #1729)
+        Update CodeQL and update runner before installing (by @RincewindsHat #1775)
+        check_disk: Check disk compiler warnings (by @RincewindsHat #1758)
+        check_disk: Trivial printf fix and a little bit of code style (by @RincewindsHat #1695)
+        check_http: Docs: make -C obvious (by @stblassitude #1554)
+        check_ifoperstatus: Re-attach a comment to where it actually belongs (by @peternewman #1699)
+        check_ircd: Restrict the nickname length of the test user for check_ircd (by @RincewindsHat #1710)
+        check_load: Check load compiler warnings (by @RincewindsHat #1759)
+        check_log: Modernize check log (by @RincewindsHat #1692)
+        check_mailq: remove duplicate W=i/C=i args in check_mailq.pl (by @ichdasich #1755)
+        check_ntp: Check ntp remove unused variables (by @RincewindsHat #1781)
+        check_pgsql: Using snprintf which honors the buffers size and guarantees null temination. (Closes: #1601) (by @waja #1663)
+        check_procs: Fix double percentage sign in usage (by @RincewindsHat #1743)
+        check_sensors.sh: Make shellcheck happier (by @RincewindsHat #1679)
+        check_snmp: Fixed option description authpassword -> authpasswd + whitespaces (by @RincewindsHat #1676)
+        check_swap: Check swap compiler warnings (by @RincewindsHat #1756)
+
+2.3.1 10 April 2021
         ENHANCEMENTS
+        check_curl: Add an option to verify the peer certificate & host using the system CA's
 
         FIXES
+        check_icmp: fix simple typo, conspicuosly -> conspicuously
+        check_curl: fixed help, usage and errors for TLS 1.3
+        check_curl: fixed a potential buffer overflow in url buffer
+        check_dns: split multiple IP addresses passed in one -a argument
+        check_curl: added string_statuscode function for printing HTTP/1.1 and HTTP/2 correctly
+        check_curl: fix crash if http header contains leading spaces
+        check_curl: display a specific human-readable error message where possible
+        check_pgsql: Using snprintf which honors the buffers size and guarantees null termination.
+        check_snmp: put the "c" (to mark a counter) after the perfdata value
+        check_http: Increase regexp limit
+        check_http: make -C obvious
+        check_curl: Increase regexp limit (to 1024 as in check_http)
+        check_curl: make -C obvious (from check_http)
+        check_curl: backported --show-body/-B to print body (from check_http)
 
 2.3 10th December 2020
         ENHANCEMENTS
@@ -529,4 +635,3 @@ This file documents the major additions and syntax changes between releases.
         check_swap % thresholds changed to measure amount free, instead of amount used
         check_disk syntax changes for -p, -m/-M, defaults to MB instead of kB
         check_procs -C expects no path for the command name
-
diff --git a/THANKS.in b/THANKS.in
index 7d1d1ff..8920140 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -381,3 +381,22 @@ Michael Kraus
 Patrick Rauscher
 Prathamesh Bhanuse
 Valentin Vidic
+Barak Shohat
+Florian Lohoff
+Stefan Bethke
+Tim Gates
+Tomas Mozes
+Aksel Sjögren
+Andreas Motl
+Claudio Kuenzler
+Daniel Uhlmann
+Eric Wunderlin
+Geert Hendrickx
+Ken D
+Klaus Ethgen
+Lee Clemens
+Linda Guo
+Peter Newman
+Tobias Fiebig
+Tobias Wiese
+Wolfgang Karall-Ahlborn
diff --git a/configure.ac b/configure.ac
index 8c5ca70..87a84a0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -427,7 +427,7 @@ if test "$ac_cv_header_utmpx_h" = "no" -a "$ac_cv_header_wtsapi32_h" = "no"
 then
         AC_PATH_PROG(PATH_TO_WHO,who)
 
-        if [$PATH_TO_WHO -q 2>/dev/null | egrep -i "^# users=[0-9]+$" >/dev/null]
+        if [$PATH_TO_WHO -q 2>/dev/null | grep -E -i "^# users=[0-9]+$" >/dev/null]
         then
                 ac_cv_path_to_who="$PATH_TO_WHO -q"
         else
@@ -776,7 +776,7 @@ dnl Removing this for the moment - Ton
 dnl Using /usr/ucb/ps on Solaris systems, to avoid truncation
 dnl Limitation that command name is not available
 dnl elif test "$ac_cv_uname_s" = "SunOS" && /usr/ucb/ps -alxwwn 2>/dev/null | \
-dnl     egrep -i ["^ *F +UID +PID +PPID +%C +PRI +NI +SZ +RSS +WCHAN +S +TT +TIME +COMMAND"] > /dev/null
+dnl     grep -E -i ["^ *F +UID +PID +PPID +%C +PRI +NI +SZ +RSS +WCHAN +S +TT +TIME +COMMAND"] > /dev/null
 dnl then
 dnl     ac_cv_ps_varlist="[&procuid,&procpid,&procppid,&procpcpu,&procvsz,&procrss,procstat,&pos]"
 dnl     ac_cv_ps_command="/usr/ucb/ps -alxwwn"
@@ -786,7 +786,7 @@ dnl 	AC_MSG_RESULT([$ac_cv_ps_command])
 
 dnl This one is the exact same test as the next one but includes etime
 elif ps axwo 'stat comm vsz rss user uid pid ppid etime args' 2>/dev/null | \
-        egrep -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +ELAPSED +COMMAND"] > /dev/null
+        grep -E -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +ELAPSED +COMMAND"] > /dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procetime,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS axwo 'stat uid pid ppid vsz rss pcpu etime comm args'"
@@ -797,7 +797,7 @@ then
 dnl Some gnu/linux systems (debian for one) don't like -axwo and need axwo.
 dnl so test for this first...
 elif ps axwo 'stat comm vsz rss user uid pid ppid args' 2>/dev/null | \
-        egrep -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +COMMAND"] > /dev/null
+        grep -E -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +COMMAND"] > /dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS axwo 'stat uid pid ppid vsz rss pcpu comm args'"
@@ -809,7 +809,7 @@ dnl For OpenBSD 3.2 & 3.3. Must come before ps -weo
 dnl Should also work for FreeBSD 5.2.1 and 5.3
 dnl  STAT UCOMM              VSZ   RSS USER      PPID COMMAND
 elif ps -axwo 'stat comm vsz rss user uid pid ppid args' 2>/dev/null | \
-        egrep -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +COMMAND"] > /dev/null
+        grep -E -i ["^ *STAT +[UCOMAND]+ +VSZ +RSS +USER +UID +PID +PPID +COMMAND"] > /dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -axwo 'stat uid pid ppid vsz rss pcpu comm args'"
@@ -821,7 +821,7 @@ dnl Some *BSDs have different format for ps. This is mainly to catch FreeBSD 4.
 dnl Limitation: Only first 16 chars returned for ucomm field
 dnl Must come before ps -weo
 elif ps -axwo 'stat uid pid ppid vsz rss pcpu ucomm command' 2>/dev/null | \
-        egrep -i ["^ *STAT +UID +PID +PPID +VSZ +RSS +%CPU +UCOMM +COMMAND"] > /dev/null
+        grep -E -i ["^ *STAT +UID +PID +PPID +VSZ +RSS +%CPU +UCOMM +COMMAND"] > /dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -axwo 'stat uid pid ppid vsz rss pcpu ucomm command'"
@@ -831,7 +831,7 @@ then
 
 dnl  STAT UCOMM              VSZ   RSS USER       UID  PPID COMMAND
 elif ps -weo 'stat comm vsz rss user uid pid ppid etime args' 2>/dev/null | \
-        egrep -i ["^ *S[TAUES]* +[UCOMDNA]+ +[VSIZE]+ +R[S]+ +U[SER]+ +U[ID]+ +P[ID]+ +P[PID]+ +[ELAPSD]+ +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^ *S[TAUES]* +[UCOMDNA]+ +[VSIZE]+ +R[S]+ +U[SER]+ +U[ID]+ +P[ID]+ +P[PID]+ +[ELAPSD]+ +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procetime,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -weo 'stat uid pid ppid vsz rss pcpu etime comm args'"
@@ -841,7 +841,7 @@ then
 
 dnl FreeBSD
 elif ps waxco 'state command vsz rss uid user pid ppid' 2>/dev/null | \
-        egrep -i ["^STAT +COMMAND +VSZ +RSS +UID +USER +PID +PPID"] >/dev/null
+        grep -E -i ["^STAT +COMMAND +VSZ +RSS +UID +USER +PID +PPID"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS waxco 'state uid pid ppid vsz rss pcpu command command'"
@@ -851,7 +851,7 @@ then
 
 dnl BSD-like mode in RH 6.1
 elif ps waxno 'state comm vsz rss uid user pid ppid args' 2>/dev/null | \
-        egrep -i ["^S +COMMAND +VSZ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^S +COMMAND +VSZ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS waxno 'state uid pid ppid vsz rss pcpu comm args'"
@@ -863,7 +863,7 @@ dnl SunOS 4.1.3:
 dnl  F  UID  PID  PPID  CP  PRI  NI  SZ  RSS  WCHAN  STAT  TT  TIME  COMMAND
 dnl Need the head -1 otherwise test will work because arguments are found
 elif ps -laxnwww 2>/dev/null | head -1 | \
-        egrep -i ["^ *F(LAGS)? +UID +PID +PPID +CP +PRI +NI +(SZ)|(VSZ)|(SIZE) +RSS +WCHAN +STAT? +TTY? +TIME +COMMAND"] >/dev/null
+        grep -E -i ["^ *F(LAGS)? +UID +PID +PPID +CP +PRI +NI +(SZ)|(VSZ)|(SIZE) +RSS +WCHAN +STAT? +TTY? +TIME +COMMAND"] >/dev/null
 then
         ac_cv_ps_varlist="[&procuid,&procpid,&procppid,&procvsz,&procrss,procstat,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS -laxnwww"
@@ -876,7 +876,7 @@ dnl  FLAGS   UID   PID  PPID PRI  NI   SIZE   RSS WCHAN       STA TTY TIME COMMA
 dnl    100     0     1     0   0   0    776    76  c0131c8c   S  ffff  0:11 init [2]
 dnl
 elif ps laxnwww 2>/dev/null | \
-        egrep -i ["^ *F(LAGS)? +UID +PID +PPID +PRI +NI +(VSZ)|(SIZE) +RSS +WCHAN +STAT? TTY +TIME +COMMAND"] >/dev/null
+        grep -E -i ["^ *F(LAGS)? +UID +PID +PPID +PRI +NI +(VSZ)|(SIZE) +RSS +WCHAN +STAT? TTY +TIME +COMMAND"] >/dev/null
 then
         ac_cv_ps_varlist="[&procuid,&procpid,&procppid,procstat,&procvsz,&procrss,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS laxnwww"
@@ -886,7 +886,7 @@ then
 
 dnl OpenBSD (needs to come early because -exo appears to work, but does not give all procs)
 elif ps -axo 'stat comm vsz rss user uid pid ppid args' 2>/dev/null | \
-        egrep -i ["^ *S[TAUES]* +[UCOMDNA]+ +[VSIZE]+ +R[S]+ +U[SER]+ +U[ID]+ +P[PID]+ +P[PID]+ +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^ *S[TAUES]* +[UCOMDNA]+ +[VSIZE]+ +R[S]+ +U[SER]+ +U[ID]+ +P[PID]+ +P[PID]+ +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -axo 'stat uid pid ppid vsz rss pcpu comm args'"
@@ -899,7 +899,7 @@ dnl Has /usr/bin/ps and /sbin/ps - force sbin version
 dnl Can't use vsize and rssize because comes back with text (eg, 1.5M instead
 dnl of 1500). Will need big changes to check_procs to support
 elif /sbin/ps -eo 'stat uid pid ppid pcpu etime comm args' 2>/dev/null | \
-        egrep -i ["^ *S +[UID]+ +[PID]+ +[PID]+ +[%CPU]+ +[ELAPSD]+ +[COMMAND]+ +[COMMAND]+"] > /dev/null
+        grep -E -i ["^ *S +[UID]+ +[PID]+ +[PID]+ +[%CPU]+ +[ELAPSD]+ +[COMMAND]+ +[COMMAND]+"] > /dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procpcpu,procetime,procprog,&pos]"
         ac_cv_ps_command="/sbin/ps -eo 'stat uid pid ppid pcpu etime comm args'"
@@ -908,7 +908,7 @@ then
         AC_MSG_RESULT([$ac_cv_ps_command])
 
 elif ps -eo 's comm vsz rss user uid pid ppid args' 2>/dev/null | \
-        egrep -i ["^S[TAUES]* +C[OMDNA]+ +[VSIZE]+ +U[SER]+ +U[ID]+ +P[PID]+ +P[PID]+ +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^S[TAUES]* +C[OMDNA]+ +[VSIZE]+ +U[SER]+ +U[ID]+ +P[PID]+ +P[PID]+ +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -eo 's uid pid ppid vsz rss pcpu comm args'"
@@ -918,7 +918,7 @@ then
 
 dnl AIX 4.3.3 and 5.1 do not have an rss field
 elif ps -eo 'stat uid pid ppid vsz pcpu comm args' 2>/dev/null | \
-        egrep -i ["^ *S[TAUES]* +UID +PID +PPID +VSZ +%CPU +COMMAND +COMMAND"] >/dev/null
+        grep -E -i ["^ *S[TAUES]* +UID +PID +PPID +VSZ +%CPU +COMMAND +COMMAND"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -eo 'stat uid pid ppid vsz pcpu comm args'"
@@ -928,7 +928,7 @@ then
 
 dnl Solaris 2.6
 elif ps -Ao 's comm vsz rss uid user pid ppid args' 2>/dev/null | \
-        egrep -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -Ao 's uid pid ppid vsz rss pcpu comm args'"
@@ -939,7 +939,7 @@ then
         AC_MSG_RESULT([$ac_cv_ps_command])
 
 elif ps -Ao 'status comm vsz rss uid user pid ppid args' 2>/dev/null | \
-        egrep -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -Ao 'status uid pid ppid vsz rss pcpu comm args'"
@@ -948,7 +948,7 @@ then
         AC_MSG_RESULT([$ac_cv_ps_command])
 
 elif ps -Ao 'state comm vsz rss uid user pid ppid args' 2>/dev/null | \
-        egrep -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -Ao 'state uid pid ppid vsz rss pcpu comm args'"
@@ -958,7 +958,7 @@ then
 
 dnl wonder who takes state instead of stat
 elif ps -ao 'state command vsz rss user pid ppid args' 2>/dev/null | \
-        egrep -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^S[TAUES]* +C[OMDNA]+ +V[SIZE]+ +RSS +UID +USER +PID +PPID +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&procpcpu,procprog,&pos]"
         ac_cv_ps_command="$PATH_TO_PS -ao 'state uid pid ppid vsz rss pcpu command args'"
@@ -968,7 +968,7 @@ then
 
 dnl IRIX 53
 elif ps -el 2>/dev/null | \
-        egrep -i ["^ *F +S +UID +PID +PPID +C +PRI +NI +P +SZ +RSS +WCHAN +TTY +TIME +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^ *F +S +UID +PID +PPID +C +PRI +NI +P +SZ +RSS +WCHAN +TTY +TIME +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procrss,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS -el (IRIX 53)"
@@ -978,7 +978,7 @@ then
 
 dnl IRIX 63
 elif ps -el 2>/dev/null | \
-        egrep -i ["^ *F +S +UID +PID +PPID +C +PRI +NI +P +ADDR +SZ +RSS +WCHAN +TTY +TIME +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^ *F +S +UID +PID +PPID +C +PRI +NI +P +ADDR +SZ +RSS +WCHAN +TTY +TIME +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS -el (IRIX 63)"
@@ -991,7 +991,7 @@ dnl S        UID       RUID USER     RUSER      PID  PPID     VSZ  %CPU COMMAND
 dnl S          0        400 root     oracle    2805     1   12904  0.00 ora_dism_SEA1X  ora_dism_SEA1X
 dnl S        400        400 oracle   oracle   19261     1  126488  0.00 tnslsnr         /u01/app/oracle/product/db/11.2.0.3/bin/tnslsnr LISTENER -inherit
 elif env UNIX95=1 ps -eo 'state uid ruid user ruser pid ppid vsz pcpu comm args' 2>/dev/null | head -n 1 | \
-    egrep -i ["^ *S +UID +RUID +USER +RUSER +PID +PPID +VSZ +%CPU +COMMAND +COMMAND"] >/dev/null
+    grep -E -i ["^ *S +UID +RUID +USER +RUSER +PID +PPID +VSZ +%CPU +COMMAND +COMMAND"] >/dev/null
 then
     ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&procvsz,&procpcpu,procprog,&pos]"
     ac_cv_ps_command="$PATH_TO_ENV UNIX95=1 $PATH_TO_PS -eo 'state uid pid ppid vsz pcpu comm args'"
@@ -1003,7 +1003,7 @@ dnl AIX 4.1:
 dnl     F S      UID   PID  PPID   C PRI NI ADDR  SZ  RSS   WCHAN    TTY  TIME CMD
 dnl    303 A        0     0     0 120  16 -- 1c07  20   24              -  0:45 swapper
 elif ps -el 2>/dev/null | \
-        egrep -i ["^ *F +S +UID +PID +PPID +C +PRI +NI +ADDR +SZ +WCHAN +TTY +TIME +[RGSCOMDNA]+"] >/dev/null
+        grep -E -i ["^ *F +S +UID +PID +PPID +C +PRI +NI +ADDR +SZ +WCHAN +TTY +TIME +[RGSCOMDNA]+"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS -el (AIX 4.1 and HP-UX)"
@@ -1013,7 +1013,7 @@ then
 
 dnl AIX?
 elif ps glaxen 2>/dev/null | \
-        egrep -i ["^ *F +UID +PID +PPID +PRI +NI +VSZ +RSS +WCHAN +STAT +TTY +TIME +COMMAND"] >/dev/null
+        grep -E -i ["^ *F +UID +PID +PPID +PRI +NI +VSZ +RSS +WCHAN +STAT +TTY +TIME +COMMAND"] >/dev/null
 then
         ac_cv_ps_varlist="[&procuid,&procpid,&procppid,&procvsz,&procrss,procstat,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS glaxen"
@@ -1027,7 +1027,7 @@ dnl Some truncation will happen in UCOMM column
 dnl STAT      VSZ    RSS   UID  PPID %CPU UCOMM            COMMAND
 dnl Ss      52756  22496   501     1   6.9 Window Manager   /System/Library/CoreServices/WindowServer -daemon
 elif ps wwaxo 'state vsz rss uid pid ppid pcpu ucomm command' 2>/dev/null | \
-        egrep -i ["^STAT +VSZ +RSS +UID +PPID +%CPU +UCOMM +COMMAND"] >/dev/null
+        grep -E -i ["^STAT +VSZ +RSS +UID +PPID +%CPU +UCOMM +COMMAND"] >/dev/null
 then
         ac_cv_ps_command="$PATH_TO_PS wwaxo 'state vsz rss uid pid ppid pcpu ucomm command'"
         ac_cv_ps_varlist="[procstat,&procvsz,&procrss,&procuid,&procpid,&procppid,&procpcpu,procprog,&pos]"
@@ -1037,7 +1037,7 @@ then
 
 dnl UnixWare
 elif ps -Al 2>/dev/null | \
-        egrep -i ["^ *F +S +UID +PID +PPID +CLS +PRI +NI +C +ADDR +SZ +WCHAN +TTY +TIME +COMD"] >/dev/null
+        grep -E -i ["^ *F +S +UID +PID +PPID +CLS +PRI +NI +C +ADDR +SZ +WCHAN +TTY +TIME +COMD"] >/dev/null
 then
         ac_cv_ps_varlist="[procstat,&procuid,&procpid,&procppid,&pos,procprog]"
         ac_cv_ps_command="$PATH_TO_PS -Al"
@@ -1105,14 +1105,14 @@ then
 
 elif [[ "z$ac_cv_uname_s" = "zUnixWare" ]] && \
         $PATH_TO_PING -n -s 127.0.0.1 56 1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -U -c %d %s"
         ac_cv_ping_packets_first=yes
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -4 -n -U -w 10 -c 1 127.0.0.1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         # check if -4 is supported - issue #1550
         with_ping_command="$PATH_TO_PING -4 -n -U -w %d -c %d %s"
@@ -1120,7 +1120,7 @@ then
         ac_cv_ping_has_timeout=yes
         AC_MSG_RESULT([$with_ping_command])
 elif $PATH_TO_PING -n -U -w 10 -c 1 127.0.0.1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -U -w %d -c %d %s"
         ac_cv_ping_packets_first=yes
@@ -1128,52 +1128,52 @@ then
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n -U -c 1 127.0.0.1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -U -c %d %s"
         ac_cv_ping_packets_first=yes
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n -c 1 127.0.0.1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -c %d %s"
         ac_cv_ping_packets_first=yes
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n 127.0.0.1 -c 1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n %s -c %d"
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING 127.0.0.1 -n 1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING %s -n %d"
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n -s 127.0.0.1 56 1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -s %s 56 %d"
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n -h 127.0.0.1 -s 56 -c 1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -h %s -s 56 -c %d"
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n -s 56 -c 1 127.0.0.1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -s 56 -c %d %s"
         ac_cv_ping_packets_first=yes
         AC_MSG_RESULT([$with_ping_command])
 
 elif $PATH_TO_PING -n -c 1 127.0.0.1 2>/dev/null | \
-        egrep -i "^round-trip|^rtt" >/dev/null
+        grep -E -i "^round-trip|^rtt" >/dev/null
 then
         with_ping_command="$PATH_TO_PING -n -c %d %s"
         ac_cv_ping_packets_first=yes
@@ -1229,14 +1229,14 @@ elif [[ "z$ac_cv_uname_o" = "zCygwin" -a "x$PATH_TO_PING" != "x" ]]; then
 elif test "x$PATH_TO_PING6" != "x"; then
         if [[ "z$ac_cv_uname_s" = "zUnixWare" ]] && \
                 $PATH_TO_PING6 -n -s ::1 56 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -U -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n -U -w 10 -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -U -w %d -c %d %s"
                 ac_cv_ping6_packets_first=yes
@@ -1244,52 +1244,52 @@ elif test "x$PATH_TO_PING6" != "x"; then
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n -U -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -U -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n ::1 -c 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n %s -c %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 ::1 -n 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 %s -n %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n -s ::1 56 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -s %s 56 %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n -h ::1 -s 56 -c 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -h %s -s 56 -c %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING6 -n -s 56 -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -s 56 -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping_command])
 
         elif $PATH_TO_PING6 -n -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING6 -n -c %d %s"
                 ac_cv_ping6_packets_first=yes
@@ -1300,59 +1300,59 @@ elif test "x$PATH_TO_PING6" != "x"; then
 elif test "x$PATH_TO_PING" != "x"; then
         if [[ "z$ac_cv_uname_s" = "zUnixWare" ]] && \
                 $PATH_TO_PING -A inet6 -n -s ::1 56 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -U -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 -n -U -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -U -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 -n -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 -n ::1 -c 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n %s -c %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 ::1 -n 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 %s -n %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 -n -s ::1 56 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -s %s 56 %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 -n -h ::1 -s 56 -c 1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -h %s -s 56 -c %d"
                 AC_MSG_RESULT([$with_ping6_command])
 
         elif $PATH_TO_PING -A inet6 -n -s 56 -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -s 56 -c %d %s"
                 ac_cv_ping6_packets_first=yes
                 AC_MSG_RESULT([$with_ping_command])
 
         elif $PATH_TO_PING -A inet6 -n -c 1 ::1 2>/dev/null | \
-                egrep -i "^round-trip|^rtt" >/dev/null
+                grep -E -i "^round-trip|^rtt" >/dev/null
         then
                 with_ping6_command="$PATH_TO_PING -A inet6 -n -c %d %s"
                 ac_cv_ping6_packets_first=yes
@@ -1589,14 +1589,14 @@ then
         ac_cv_have_swap=yes
         ac_cv_swap_command="$PATH_TO_SWAP -l"
         if [$PATH_TO_SWAP -l 2>/dev/null | \
-                egrep -i "^lswap +path +pri +swaplo +blocks +free +maxswap" \
+                grep -E -i "^lswap +path +pri +swaplo +blocks +free +maxswap" \
                 >/dev/null]
         then
                 ac_cv_swap_format=[" %*d %*s %*d,%*d %*d %*d %f %f"]
                 ac_cv_swap_conv=2048
                 AC_MSG_RESULT([using IRIX format swap])
 
-        elif [$PATH_TO_SWAP -l 2>/dev/null | egrep -i "^path +dev +swaplo +blocks +free" >/dev/null]
+        elif [$PATH_TO_SWAP -l 2>/dev/null | grep -E -i "^path +dev +swaplo +blocks +free" >/dev/null]
         then
                 ac_cv_swap_format=["%*s %*[0-9,-] %*d %f %f"]
                 ac_cv_swap_conv=2048
@@ -1615,19 +1615,19 @@ AC_PATH_PROG(PATH_TO_SWAPINFO,swapinfo)
 if (test -n "$PATH_TO_SWAPINFO")
 then
 AC_MSG_CHECKING([for $PATH_TO_SWAPINFO format])
-if [$PATH_TO_SWAPINFO -k 2>&1 | egrep -i "^Device" >/dev/null]
+if [$PATH_TO_SWAPINFO -k 2>&1 | grep -E -i "^Device" >/dev/null]
 then
         ac_cv_have_swap=yes
         ac_cv_swap_command="$PATH_TO_SWAPINFO -k"
 
-        if [$PATH_TO_SWAPINFO -k 2>/dev/null | egrep -i "^Device +1K-blocks +Used +Avail" >/dev/null]
+        if [$PATH_TO_SWAPINFO -k 2>/dev/null | grep -E -i "^Device +1K-blocks +Used +Avail" >/dev/null]
         then
                 ac_cv_swap_format=["%*s %f %*d %f"]
                 ac_cv_swap_conv=1024
                 AC_MSG_RESULT([using FreeBSD format swapinfo])
         fi
 
-elif [$PATH_TO_SWAPINFO -dfM 2>/dev/null | egrep -i "^TYPE +AVAIL +USED +FREE" >/dev/null]
+elif [$PATH_TO_SWAPINFO -dfM 2>/dev/null | grep -E -i "^TYPE +AVAIL +USED +FREE" >/dev/null]
 then
         ac_cv_have_swap=yes
         ac_cv_swap_command="$PATH_TO_SWAPINFO -dfM"
@@ -1642,7 +1642,7 @@ AC_PATH_PROG(PATH_TO_LSPS,lsps)
 if (test -n "$PATH_TO_LSPS")
 then
 AC_MSG_CHECKING([for $PATH_TO_LSPS format])
-if [$PATH_TO_LSPS -a 2>/dev/null | egrep -i "^Page Space" > /dev/null]
+if [$PATH_TO_LSPS -a 2>/dev/null | grep -E -i "^Page Space" > /dev/null]
 then
         ac_cv_have_swap=yes
         ac_cv_swap_command="$PATH_TO_LSPS -a"
@@ -1844,7 +1844,7 @@ AC_ARG_ENABLE(redhat-pthread-workaround,
         [ac_cv_enable_redhat_pthread_workaround=$enableval],
         [ac_cv_enable_redhat_pthread_workaround=test])
 if test "$ac_cv_enable_redhat_pthread_workaround" = "test" ; then
-        if echo $ac_cv_uname_r | egrep "\.EL(smp)?$" >/dev/null 2>&1 ; then
+        if echo $ac_cv_uname_r | grep -E "\.EL(smp)?$" >/dev/null 2>&1 ; then
                 AC_MSG_NOTICE([See https://www.monitoring-plugins.org/doc/faq/configure-hangs.html if this next part takes a long time])
                 AC_MSG_CHECKING(for redhat spopen problem)
                 ( cd config_test && make && make test ) > /dev/null 2>&1
diff --git a/doc/RELEASING.md b/doc/RELEASING.md
index bcd2c5a..58ec3e1 100644
--- a/doc/RELEASING.md
+++ b/doc/RELEASING.md
@@ -2,14 +2,14 @@ Releasing a New Monitoring Plugins Version
 ==========================================
 
 Throughout this document, it is assumed that the current Monitoring
-Plugins version is 2.2.1, and that we're about to publish version 2.3.
+Plugins version is 2.3.2, and that we're about to publish version 2.4.
 It is also assumed that the official repository on GitHub is tracked
 using the remote name `monitoring-plugins` (rather than `origin`).
 
 Before you start
 ----------------
 
-- Check Travis CI status.
+- Check Github Actions status.
 - Update local Git repository to the current `master` tip.  For a
   maintenance release (e.g., version 2.3.2), update to the current
   `maint-2.3` tip, instead.
@@ -55,7 +55,7 @@ Build the tarball
 -----------------
 
     cd /tmp/plugins
-    tools/setup
+    tools/setup     # requires docbook to be installed
     ./configure
     make dist
 
diff --git a/pkg/solaris/solpkg b/pkg/solaris/solpkg
index a21176e..73b3c64 100755
--- a/pkg/solaris/solpkg
+++ b/pkg/solaris/solpkg
@@ -9,7 +9,7 @@ $pkgtrans = "/usr/bin/pkgtrans";
 $prototype = "prototype";
 $pkginfo = "pkginfo";
 $preinstall = "preinstall";
-$egrep = "/usr/bin/egrep";
+$egrep = "/usr/bin/grep -E";
 
 # Sanity check
 
diff --git a/plugins-scripts/check_sensors.sh b/plugins-scripts/check_sensors.sh
index ab4e726..921e7b3 100755
--- a/plugins-scripts/check_sensors.sh
+++ b/plugins-scripts/check_sensors.sh
@@ -49,10 +49,10 @@ case "$1" in
                 elif test "${status}" -ne 0; then
                         text="WARNING - sensors returned state $status"
                         exit=$STATE_WARNING
-                elif echo "${sensordata}" | egrep ALARM > /dev/null; then
+                elif echo "${sensordata}" | grep -E ALARM > /dev/null; then
                         text="SENSOR CRITICAL - Sensor alarm detected!"
                         exit=$STATE_CRITICAL
-                elif echo "${sensordata}" | egrep FAULT > /dev/null \
+                elif echo "${sensordata}" | grep -E FAULT > /dev/null \
                     && test "$1" != "-i" -a "$1" != "--ignore-fault"; then
                         text="SENSOR UNKNOWN - Sensor reported fault"
                         exit=$STATE_UNKNOWN
diff --git a/plugins/check_curl.c b/plugins/check_curl.c
index a69854a..2ad373c 100644
--- a/plugins/check_curl.c
+++ b/plugins/check_curl.c
@@ -476,6 +476,18 @@ check_http (void)
         printf ("* curl CURLOPT_RESOLVE: %s\n", dnscache);
   }
 
+  // If server_address is an IPv6 address it must be surround by square brackets
+  struct in6_addr tmp_in_addr;
+  if (inet_pton(AF_INET6, server_address, &tmp_in_addr) == 1) {
+    char *new_server_address = malloc(strlen(server_address) + 3);
+    if (new_server_address == NULL) {
+      die(STATE_UNKNOWN, "HTTP UNKNOWN - Unable to allocate memory\n");
+    }
+    snprintf(new_server_address, strlen(server_address)+3, "[%s]", server_address);
+    free(server_address);
+    server_address = new_server_address;
+  }
+
   /* compose URL: use the address we want to connect to, set Host: header later */
   snprintf (url, DEFAULT_BUFFER_SIZE, "%s://%s:%d%s",
       use_ssl ? "https" : "http",
@@ -999,10 +1011,12 @@ GOT_FIRST_CERT:
   result = max_state_alt(get_status(total_time, thlds), result);
 
   /* Cut-off trailing characters */
-  if(msg[strlen(msg)-2] == ',')
-    msg[strlen(msg)-2] = '\0';
-  else
-    msg[strlen(msg)-3] = '\0';
+  if (strlen(msg) >= 2) {
+      if(msg[strlen(msg)-2] == ',')
+        msg[strlen(msg)-2] = '\0';
+      else
+        msg[strlen(msg)-3] = '\0';
+    }
 
   /* TODO: separate _() msg and status code: die (result, "HTTP %s: %s\n", state_text(result), msg); */
   die (result, "HTTP %s: %s %d %s%s%s - %d bytes in %.3f second response time %s|%s\n%s%s",
diff --git a/plugins/check_disk.c b/plugins/check_disk.c
index 66c5dd3..7018c6f 100644
--- a/plugins/check_disk.c
+++ b/plugins/check_disk.c
@@ -171,7 +171,6 @@ main (int argc, char **argv)
   char *perf_ilabel;
   char *preamble;
   char *flag_header;
-  double inode_space_pct;
   int temp_result;
 
   struct mount_entry *me;
@@ -288,7 +287,7 @@ main (int argc, char **argv)
       get_stats (path, &fsp);
 
       if (verbose >= 3) {
-        printf ("For %s, used_pct=%g free_pct=%g used_units=%llu free_units=%llu total_units=%llu used_inodes_pct=%g free_inodes_pct=%g fsp.fsu_blocksize=%llu mult=%llu\n",
+        printf ("For %s, used_pct=%g free_pct=%g used_units=%lu free_units=%lu total_units=%lu used_inodes_pct=%g free_inodes_pct=%g fsp.fsu_blocksize=%lu mult=%lu\n",
                 me->me_mountdir,
                 path->dused_pct,
                 path->dfree_pct,
@@ -369,10 +368,10 @@ main (int argc, char **argv)
         critical_high_tide = UINT64_MAX;
 
         if (path->freeinodes_percent->warning != NULL) {
-          warning_high_tide = llabs( min( (double) warning_high_tide, (double) (1.0 - path->freeinodes_percent->warning->end/100)*path->inodes_total ));
+          warning_high_tide = (uint64_t) fabs( min( (double) warning_high_tide, (double) (1.0 - path->freeinodes_percent->warning->end/100)*path->inodes_total ));
         }
         if (path->freeinodes_percent->critical != NULL) {
-          critical_high_tide = llabs( min( (double) critical_high_tide, (double) (1.0 - path->freeinodes_percent->critical->end/100)*path->inodes_total ));
+          critical_high_tide = (uint64_t) fabs( min( (double) critical_high_tide, (double) (1.0 - path->freeinodes_percent->critical->end/100)*path->inodes_total ));
         }
 
         xasprintf (&perf_ilabel, "%s (inodes)", (!strcmp(me->me_mountdir, "none") || display_mntp) ? me->me_devname : me->me_mountdir);
@@ -406,15 +405,7 @@ main (int argc, char **argv)
                   xasprintf(&output, "%s inode=%.0f%%)%s;", output, path->dfree_inodes_percent, ((disk_result && verbose >= 1) ? "]" : ""));
           }
       free(flag_header);
-      /* TODO: Need to do a similar debug line
-      xasprintf (&details, _("%s\n\%.0f of %.0f %s (%.0f%% inode=%.0f%%) free on %s (type %s mounted on %s) warn:%lu crit:%lu warn%%:%.0f%% crit%%:%.0f%%"),
-                details, dfree_units, dtotal_units, units, dfree_pct, inode_space_pct,
-                me->me_devname, me->me_type, me->me_mountdir,
-                (unsigned long)w_df, (unsigned long)c_df, w_dfp, c_dfp);
-      */
-
     }
-
   }
 
   if (verbose >= 2)
@@ -689,6 +680,7 @@ process_arguments (int argc, char **argv)
       break;
     case 'I':
       cflags |= REG_ICASE;
+          // Intentional fallthrough
     case 'i':
       if (!path_selected)
         die (STATE_UNKNOWN, "DISK %s: %s\n", _("UNKNOWN"), _("Paths need to be selected before using -i/-I. Use -A to select all paths explicitly"));
@@ -728,8 +720,10 @@ process_arguments (int argc, char **argv)
 
     case 'A':
       optarg = strdup(".*");
+          // Intentional fallthrough
     case 'R':
       cflags |= REG_ICASE;
+          // Intentional fallthrough
     case 'r':
       if (! (warn_freespace_units || crit_freespace_units || warn_freespace_percent ||
              crit_freespace_percent || warn_usedspace_units || crit_usedspace_units ||
@@ -862,51 +856,6 @@ set_all_thresholds (struct parameter_list *path)
     set_thresholds(&path->freeinodes_percent, warn_freeinodes_percent, crit_freeinodes_percent);
 }
 
-/* TODO: Remove?
-
-int
-validate_arguments (uintmax_t w, uintmax_t c, double wp, double cp, double iwp, double icp, char *mypath)
-{
-  if (w < 0 && c < 0 && wp < 0.0 && cp < 0.0) {
-    printf (_("INPUT ERROR: No thresholds specified"));
-    print_path (mypath);
-    return ERROR;
-  }
-  else if ((wp >= 0.0 || cp >= 0.0) &&
-           (wp < 0.0 || cp < 0.0 || wp > 100.0 || cp > 100.0 || cp > wp)) {
-    printf (_("\
-INPUT ERROR: C_DFP (%f) should be less than W_DFP (%.1f) and both should be between zero and 100 percent, inclusive"),
-            cp, wp);
-    print_path (mypath);
-    return ERROR;
-  }
-  else if ((iwp >= 0.0 || icp >= 0.0) &&
-           (iwp < 0.0 || icp < 0.0 || iwp > 100.0 || icp > 100.0 || icp > iwp)) {
-    printf (_("\
-INPUT ERROR: C_IDFP (%f) should be less than W_IDFP (%.1f) and both should be between zero and 100 percent, inclusive"),
-            icp, iwp);
-    print_path (mypath);
-    return ERROR;
-  }
-  else if ((w > 0 || c > 0) && (w == 0 || c == 0 || c > w)) {
-    printf (_("\
-INPUT ERROR: C_DF (%lu) should be less than W_DF (%lu) and both should be greater than zero"),
-            (unsigned long)c, (unsigned long)w);
-    print_path (mypath);
-    return ERROR;
-  }
-
-  return OK;
-}
-
-*/
-
-
-
-
-
-
-
 void
 print_help (void)
 {
@@ -1042,7 +991,7 @@ get_stats (struct parameter_list *p, struct fs_usage *fsp) {
         get_fs_usage (p_list->best_match->me_mountdir, p_list->best_match->me_devname, &tmpfsp);
         get_path_stats(p_list, &tmpfsp);
         if (verbose >= 3)
-          printf("Group %s: adding %llu blocks sized %llu, (%s) used_units=%lu free_units=%llu total_units=%llu mult=%llu\n",
+          printf("Group %s: adding %lu blocks sized %lu, (%s) used_units=%lu free_units=%lu total_units=%lu mult=%lu\n",
                  p_list->group,
                                  tmpfsp.fsu_blocks,
                                  tmpfsp.fsu_blocksize,
@@ -1071,7 +1020,7 @@ get_stats (struct parameter_list *p, struct fs_usage *fsp) {
         first = 0;
       }
       if (verbose >= 3)
-        printf("Group %s now has: used_units=%llu free_units=%llu total_units=%llu fsu_blocksize=%llu mult=%llu\n",
+        printf("Group %s now has: used_units=%lu free_units=%lu total_units=%lu fsu_blocksize=%lu mult=%lu\n",
                p->group,
                p->dused_units,
                p->dfree_units,
diff --git a/plugins/check_http.c b/plugins/check_http.c
index f8ec853..41d4781 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -1070,9 +1070,8 @@ check_http (void)
     }
 
     xasprintf (&buf, "%sContent-Length: %i\r\n\r\n", buf, (int)strlen (http_post_data));
-    xasprintf (&buf, "%s%s%s", buf, http_post_data, CRLF);
-  }
-  else {
+    xasprintf (&buf, "%s%s", buf, http_post_data);
+  } else {
     /* or just a newline so the server knows we're done with the request */
     xasprintf (&buf, "%s%s", buf, CRLF);
   }
@@ -1363,7 +1362,9 @@ check_http (void)
 #define HD2 URI_HTTP "://" URI_HOST "/" URI_PATH
 #define HD3 URI_HTTP "://" URI_HOST ":" URI_PORT
 #define HD4 URI_HTTP "://" URI_HOST
-#define HD5 URI_PATH
+/* relative reference redirect like //www.site.org/test https://tools.ietf.org/html/rfc3986 */
+#define HD5 "//" URI_HOST "/" URI_PATH
+#define HD6 URI_PATH
 
 void
 redir (char *pos, char *status_line)
@@ -1440,9 +1441,21 @@ redir (char *pos, char *status_line)
       use_ssl = server_type_check (type);
       i = server_port_check (use_ssl);
     }
+    /* URI_HTTP, URI_HOST, URI_PATH */
+    else if (sscanf (pos, HD5, addr, url) == 2) {
+      if(use_ssl){
+        strcpy (type,"https");
+      }
+      else{
+         strcpy (type, server_type);
+      }
+      xasprintf (&url, "/%s", url);
+      use_ssl = server_type_check (type);
+      i = server_port_check (use_ssl);
+    }
 
     /* URI_PATH */
-    else if (sscanf (pos, HD5, url) == 1) {
+    else if (sscanf (pos, HD6, url) == 1) {
       /* relative url */
       if ((url[0] != '/')) {
         if ((x = strrchr(server_url, '/')))
diff --git a/plugins/check_load.c b/plugins/check_load.c
index 0e4de54..00f7c87 100644
--- a/plugins/check_load.c
+++ b/plugins/check_load.c
@@ -1,41 +1,43 @@
 /*****************************************************************************
-* 
+*
 * Monitoring check_load plugin
-* 
+*
 * License: GPL
 * Copyright (c) 1999-2007 Monitoring Plugins Development Team
-* 
+*
 * Description:
-* 
+*
 * This file contains the check_load plugin
-* 
+*
 * This plugin tests the current system load average.
-* 
-* 
+*
+*
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
-* 
+*
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
-* 
+*
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-* 
-* 
+*
+*
 *****************************************************************************/
 
 const char *progname = "check_load";
-const char *copyright = "1999-2007";
+const char *copyright = "1999-2022";
 const char *email = "devel@monitoring-plugins.org";
 
-#include "common.h"
-#include "runcmd.h"
-#include "utils.h"
-#include "popen.h"
+#include "./common.h"
+#include "./runcmd.h"
+#include "./utils.h"
+#include "./popen.h"
+
+#include <string.h>
 
 #ifdef HAVE_SYS_LOADAVG_H
 #include <sys/loadavg.h>
@@ -68,7 +70,7 @@ double cload[3] = { 0.0, 0.0, 0.0 };
 #define la15 la[2]
 
 char *status_line;
-int take_into_account_cpus = 0;
+bool take_into_account_cpus = false;
 
 static void
 get_threshold(char *arg, double *th)
@@ -101,7 +103,7 @@ get_threshold(char *arg, double *th)
 int
 main (int argc, char **argv)
 {
-        int result;
+        int result = -1;
         int i;
         long numcpus;
 
@@ -164,7 +166,7 @@ main (int argc, char **argv)
             sscanf (input_buffer, "%*[^l]load averages: %lf, %lf, %lf", &la1, &la5, &la15);
     }
     else {
-                printf (_("could not parse load from uptime %s: %s\n"), PATH_TO_UPTIME, result);
+                printf (_("could not parse load from uptime %s: %d\n"), PATH_TO_UPTIME, result);
                 return STATE_UNKNOWN;
     }
 
@@ -176,13 +178,6 @@ main (int argc, char **argv)
 # endif
 #endif
 
-        if (take_into_account_cpus == 1) {
-                if ((numcpus = GET_NUMBER_OF_CPUS()) > 0) {
-                        la[0] = la[0] / numcpus;
-                        la[1] = la[1] / numcpus;
-                        la[2] = la[2] / numcpus;
-                }
-        }
         if ((la[0] < 0.0) || (la[1] < 0.0) || (la[2] < 0.0)) {
 #ifdef HAVE_GETLOADAVG
                 printf (_("Error in getloadavg()\n"));
@@ -200,18 +195,49 @@ main (int argc, char **argv)
         result = STATE_OK;
 
         xasprintf(&status_line, _("load average: %.2f, %.2f, %.2f"), la1, la5, la15);
+        xasprintf(&status_line, ("total %s"), status_line);
+
+
+        double scaled_la[3] = { 0.0, 0.0, 0.0 };
+        bool is_using_scaled_load_values = false;
+
+        if (take_into_account_cpus == true && (numcpus = GET_NUMBER_OF_CPUS()) > 0) {
+                is_using_scaled_load_values = true;
+
+                scaled_la[0] = la[0] / numcpus;
+                scaled_la[1] = la[1] / numcpus;
+                scaled_la[2] = la[2] / numcpus;
+
+                char *tmp = NULL;
+                xasprintf(&tmp, _("load average: %.2f, %.2f, %.2f"), scaled_la[0], scaled_la[1], scaled_la[2]);
+                xasprintf(&status_line, "scaled %s - %s", tmp, status_line);
+        }
 
         for(i = 0; i < 3; i++) {
-                if(la[i] > cload[i]) {
-                        result = STATE_CRITICAL;
-                        break;
+                if (is_using_scaled_load_values) {
+                        if(scaled_la[i] > cload[i]) {
+                                result = STATE_CRITICAL;
+                                break;
+                        }
+                        else if(scaled_la[i] > wload[i]) result = STATE_WARNING;
+                } else {
+                        if(la[i] > cload[i]) {
+                                result = STATE_CRITICAL;
+                                break;
+                        }
+                        else if(la[i] > wload[i]) result = STATE_WARNING;
                 }
-                else if(la[i] > wload[i]) result = STATE_WARNING;
         }
 
         printf("LOAD %s - %s|", state_text(result), status_line);
-        for(i = 0; i < 3; i++)
-                printf("load%d=%.3f;%.3f;%.3f;0; ", nums[i], la[i], wload[i], cload[i]);
+        for(i = 0; i < 3; i++) {
+                if (is_using_scaled_load_values) {
+                        printf("load%d=%.3f;;;0; ", nums[i], la[i]);
+                        printf("scaled_load%d=%.3f;%.3f;%.3f;0; ", nums[i], scaled_la[i], wload[i], cload[i]);
+                } else {
+                        printf("load%d=%.3f;%.3f;%.3f;0; ", nums[i], la[i], wload[i], cload[i]);
+                }
+        }
 
         putchar('\n');
         if (n_procs_to_show > 0) {
@@ -255,7 +281,7 @@ process_arguments (int argc, char **argv)
                         get_threshold(optarg, cload);
                         break;
                 case 'r': /* Divide load average by number of CPUs */
-                        take_into_account_cpus = 1;
+                        take_into_account_cpus = true;
                         break;
                 case 'V':                                                                       /* version */
                         print_revision (progname, NP_VERSION);
@@ -289,7 +315,6 @@ process_arguments (int argc, char **argv)
 }
 
 
-
 static int
 validate_arguments (void)
 {
@@ -310,7 +335,6 @@ validate_arguments (void)
 }
 
 
-
 void
 print_help (void)
 {
@@ -321,7 +345,7 @@ print_help (void)
 
         printf (_("This plugin tests the current system load average."));
 
-  printf ("\n\n");
+        printf ("\n\n");
 
         print_usage ();
 
@@ -329,15 +353,15 @@ print_help (void)
         printf (UT_EXTRA_OPTS);
 
         printf (" %s\n", "-w, --warning=WLOAD1,WLOAD5,WLOAD15");
-  printf ("    %s\n", _("Exit with WARNING status if load average exceeds WLOADn"));
-  printf (" %s\n", "-c, --critical=CLOAD1,CLOAD5,CLOAD15");
-  printf ("    %s\n", _("Exit with CRITICAL status if load average exceed CLOADn"));
-  printf ("    %s\n", _("the load average format is the same used by \"uptime\" and \"w\""));
-  printf (" %s\n", "-r, --percpu");
-  printf ("    %s\n", _("Divide the load averages by the number of CPUs (when possible)"));
-  printf (" %s\n", "-n, --procs-to-show=NUMBER_OF_PROCS");
-  printf ("    %s\n", _("Number of processes to show when printing the top consuming processes."));
-  printf ("    %s\n", _("NUMBER_OF_PROCS=0 disables this feature. Default value is 0"));
+        printf ("    %s\n", _("Exit with WARNING status if load average exceeds WLOADn"));
+        printf (" %s\n", "-c, --critical=CLOAD1,CLOAD5,CLOAD15");
+        printf ("    %s\n", _("Exit with CRITICAL status if load average exceed CLOADn"));
+        printf ("    %s\n", _("the load average format is the same used by \"uptime\" and \"w\""));
+        printf (" %s\n", "-r, --percpu");
+        printf ("    %s\n", _("Divide the load averages by the number of CPUs (when possible)"));
+        printf (" %s\n", "-n, --procs-to-show=NUMBER_OF_PROCS");
+        printf ("    %s\n", _("Number of processes to show when printing the top consuming processes."));
+        printf ("    %s\n", _("NUMBER_OF_PROCS=0 disables this feature. Default value is 0"));
 
         printf (UT_SUPPORT);
 }
@@ -345,8 +369,8 @@ print_help (void)
 void
 print_usage (void)
 {
-  printf ("%s\n", _("Usage:"));
-  printf ("%s [-r] -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15 [-n NUMBER_OF_PROCS]\n", progname);
+        printf ("%s\n", _("Usage:"));
+        printf ("%s [-r] -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15 [-n NUMBER_OF_PROCS]\n", progname);
 }
 
 #ifdef PS_USES_PROCPCPU
@@ -384,8 +408,8 @@ static int print_top_consuming_processes() {
 #ifdef PS_USES_PROCPCPU
         qsort(chld_out.line + 1, chld_out.lines - 1, sizeof(char*), cmpstringp);
 #endif /* PS_USES_PROCPCPU */
-        int lines_to_show = chld_out.lines < (n_procs_to_show + 1)
-                        ? chld_out.lines : n_procs_to_show + 1;
+        int lines_to_show = chld_out.lines < (size_t)(n_procs_to_show + 1)
+                        ? (int)chld_out.lines : n_procs_to_show + 1;
         for (i = 0; i < lines_to_show; i += 1) {
                 printf("%s\n", chld_out.line[i]);
         }
diff --git a/plugins/check_ntp.c b/plugins/check_ntp.c
index 914b40c..8b776ba 100644
--- a/plugins/check_ntp.c
+++ b/plugins/check_ntp.c
@@ -355,7 +355,7 @@ int best_offset_server(const ntp_server_results *slist, int nservers){
  * - we also "manually" handle resolving host names and connecting, because
  *   we have to do it in a way that our lazy macros don't handle currently :( */
 double offset_request(const char *host, int *status){
-        int i=0, j=0, ga_result=0, num_hosts=0, *socklist=NULL, respnum=0;
+        int i=0, ga_result=0, num_hosts=0, *socklist=NULL, respnum=0;
         int servers_completed=0, one_read=0, servers_readable=0, best_index=-1;
         time_t now_time=0, start_ts=0;
         ntp_message *req=NULL;
@@ -488,7 +488,7 @@ double offset_request(const char *host, int *status){
         /* cleanup */
         /* FIXME: Not closing the socket to avoid re-use of the local port
          * which can cause old NTP packets to be read instead of NTP control
-         * pactets in jitter_request(). THERE MUST BE ANOTHER WAY...
+         * packets in jitter_request(). THERE MUST BE ANOTHER WAY...
          * for(j=0; j<num_hosts; j++){ close(socklist[j]); } */
         free(socklist);
         free(ufds);
@@ -512,7 +512,7 @@ setup_control_request(ntp_control_message *p, uint8_t opcode, uint16_t seq){
 }
 
 /* XXX handle responses with the error bit set */
-double jitter_request(const char *host, int *status){
+double jitter_request(int *status){
         int conn=-1, i, npeers=0, num_candidates=0, syncsource_found=0;
         int run=0, min_peer_sel=PEER_INCLUDED, num_selected=0, num_valid=0;
         int peers_size=0, peer_offset=0;
@@ -803,7 +803,7 @@ int main(int argc, char *argv[]){
          * (for example) will result in an error
          */
         if(do_jitter){
-                jitter=jitter_request(server_address, &jitter_result);
+                jitter=jitter_request(&jitter_result);
                 result = max_state_alt(result, get_status(jitter, jitter_thresholds));
                 /* -1 indicates that we couldn't calculate the jitter
                  * Only overrides STATE_OK from the offset */
diff --git a/plugins/check_pgsql.c b/plugins/check_pgsql.c
index c893386..c26cd43 100644
--- a/plugins/check_pgsql.c
+++ b/plugins/check_pgsql.c
@@ -69,7 +69,6 @@ int process_arguments (int, char **);
 int validate_arguments (void);
 void print_usage (void);
 void print_help (void);
-int is_pg_dbname (char *);
 int is_pg_logname (char *);
 int do_query (PGconn *, char *);
 
@@ -347,10 +346,10 @@ process_arguments (int argc, char **argv)
                                 pgport = optarg;
                         break;
                 case 'd':     /* database name */
-                        if (!is_pg_dbname (optarg)) /* checks length and valid chars */
-                                usage2 (_("Database name is not valid"), optarg);
-                        else /* we know length, and know optarg is terminated, so us strcpy */
-                                snprintf(dbName, NAMEDATALEN, "%s", optarg);
+                        if (strlen(optarg) >= NAMEDATALEN) {
+                                usage2 (_("Database name exceeds the maximum length"), optarg);
+                        }
+                        snprintf(dbName, NAMEDATALEN, "%s", optarg);
                         break;
                 case 'l':     /* login name */
                         if (!is_pg_logname (optarg))
@@ -414,45 +413,6 @@ validate_arguments ()
         return OK;
 }
 
-
-/******************************************************************************
-
-@@-
-<sect3>
-<title>is_pg_dbname</title>
-
-<para>&PROTO_is_pg_dbname;</para>
-
-<para>Given a database name, this function returns TRUE if the string
-is a valid PostgreSQL database name, and returns false if it is
-not.</para>
-
-<para>Valid PostgreSQL database names are less than &NAMEDATALEN;
-characters long and consist of letters, numbers, and underscores. The
-first character cannot be a number, however.</para>
-
-</sect3>
--@@
-******************************************************************************/
-
-
-
-int
-is_pg_dbname (char *dbname)
-{
-        char txt[NAMEDATALEN];
-        char tmp[NAMEDATALEN];
-        if (strlen (dbname) > NAMEDATALEN - 1)
-                return (FALSE);
-        strncpy (txt, dbname, NAMEDATALEN - 1);
-        txt[NAMEDATALEN - 1] = 0;
-        if (sscanf (txt, "%[_a-zA-Z]%[^_a-zA-Z0-9-]", tmp, tmp) == 1)
-                return (TRUE);
-        if (sscanf (txt, "%[_a-zA-Z]%[_a-zA-Z0-9-]%[^_a-zA-Z0-9-]", tmp, tmp, tmp) ==
-                        2) return (TRUE);
-        return (FALSE);
-}
-
 /**
 
 the tango program should eventually create an entity here based on the
diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index ff58b15..a607da1 100644
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
@@ -410,7 +410,6 @@ check_swap(float free_swap_mb, float total_swap_mb)
         uint64_t usage_percentage = ((total_swap_mb - free_swap_mb) / total_swap_mb) * 100;
 
         if (crit.is_percentage &&
-                        usage_percentage >= 0 &&
                         crit.value != 0 &&
                         usage_percentage >= (100 - crit.value))
         {
@@ -418,7 +417,6 @@ check_swap(float free_swap_mb, float total_swap_mb)
         }
 
         if (warn.is_percentage &&
-                        usage_percentage >= 0 &&
                         warn.value != 0 &&
                         usage_percentage >= (100 - warn.value))
         {
@@ -475,10 +473,9 @@ process_arguments (int argc, char **argv)
                                         if (is_uint64(optarg, &warn.value)) {
                                                 if (warn.value > 100) {
                                                         usage4 (_("Warning threshold percentage must be <= 100!"));
-                                                } else {
-                                                        break;
                                                 }
                                         }
+                                        break;
                                 } else {
                                         /* It's Bytes */
                                         warn.is_percentage = 0;
@@ -506,10 +503,9 @@ process_arguments (int argc, char **argv)
                                         if (is_uint64(optarg, &crit.value)) {
                                                 if (crit.value> 100) {
                                                         usage4 (_("Critical threshold percentage must be <= 100!"));
-                                                } else {
-                                                        break;
                                                 }
                                         }
+                                        break;
                                 } else {
                                         /* It's Bytes */
                                         crit.is_percentage = 0;
@@ -527,6 +523,7 @@ process_arguments (int argc, char **argv)
                         if ((no_swap_state = mp_translate_state(optarg)) == ERROR) {
                                 usage4 (_("no-swap result must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3)."));
                         }
+                        break;
                 case 'v':                                                                       /* verbose */
                         verbose++;
                         break;
diff --git a/plugins/t/check_curl.t b/plugins/t/check_curl.t
index 693f4b2..eae98cc 100644
--- a/plugins/t/check_curl.t
+++ b/plugins/t/check_curl.t
@@ -1,15 +1,22 @@
 #! /usr/bin/perl -w -I ..
 #
-# HyperText Transfer Protocol (HTTP) Test via check_http
+# HyperText Transfer Protocol (HTTP) Test via check_curl
 #
 #
 
 use strict;
 use Test::More;
 use POSIX qw/mktime strftime/;
-use NPTest;
 
-plan tests => 57;
+use vars qw($tests $has_ipv6);
+
+BEGIN {
+    use NPTest;
+    $has_ipv6 = NPTest::has_ipv6();
+    $tests = $has_ipv6 ? 59 : 57;
+    plan tests => $tests;
+}
+
 
 my $successOutput = '/OK.*HTTP.*second/';
 
@@ -18,6 +25,7 @@ my $plugin = 'check_http';
 $plugin    = 'check_curl' if $0 =~ m/check_curl/mx;
 
 my $host_tcp_http      = getTestParameter("NP_HOST_TCP_HTTP", "A host providing the HTTP Service (a web server)", "localhost");
+my $host_tcp_http_ipv6      = getTestParameter("NP_HOST_TCP_HTTP_IPV6", "An IPv6 address providing a HTTP Service (a web server)", "::1");
 my $host_tls_http      = getTestParameter("NP_HOST_TLS_HTTP", "A host providing the HTTPS Service (a tls web server)", "localhost");
 my $host_tls_cert      = getTestParameter("NP_HOST_TLS_CERT", "the common name of the certificate.", "localhost");
 my $host_nonresponsive = getTestParameter("NP_HOST_NONRESPONSIVE", "The hostname of system not responsive to network requests", "10.0.0.1");
@@ -31,26 +39,35 @@ my $faketime = -x '/usr/bin/faketime' ? 1 : 0;
 
 
 $res = NPTest->testCmd(
-        "./$plugin $host_tcp_http -wt 300 -ct 600"
-        );
+    "./$plugin $host_tcp_http -wt 300 -ct 600"
+    );
 cmp_ok( $res->return_code, '==', 0, "Webserver $host_tcp_http responded" );
 like( $res->output, $successOutput, "Output OK" );
 
+if ($has_ipv6) {
+    # Test for IPv6 formatting
+    $res = NPTest->testCmd(
+        "./$plugin -I $host_tcp_http_ipv6 -wt 300 -ct 600"
+        );
+    cmp_ok( $res->return_code, '==', 0, "IPv6 URL formatting is working" );
+    like( $res->output, $successOutput, "Output OK" );
+}
+
 $res = NPTest->testCmd(
-        "./$plugin $host_tcp_http -wt 300 -ct 600 -v -v -v -k 'bob:there' -k 'carl:frown'"
-        );
+    "./$plugin $host_tcp_http -wt 300 -ct 600 -v -v -v -k 'bob:there' -k 'carl:frown'"
+    );
 like( $res->output, '/bob:there\r\ncarl:frown\r\n/', "Got headers with multiple -k options" );
 
 $res = NPTest->testCmd(
-        "./$plugin $host_nonresponsive -wt 1 -ct 2 -t 3"
-        );
+    "./$plugin $host_nonresponsive -wt 1 -ct 2 -t 3"
+    );
 cmp_ok( $res->return_code, '==', 2, "Webserver $host_nonresponsive not responding" );
 # was CRITICAL only, but both check_curl and check_http print HTTP CRITICAL (puzzle?!)
 like( $res->output, "/HTTP CRITICAL - Invalid HTTP response received from host on port 80: cURL returned 28 - Connection timed out after/", "Output OK");
 
 $res = NPTest->testCmd(
-        "./$plugin $hostname_invalid -wt 1 -ct 2"
-        );
+    "./$plugin $hostname_invalid -wt 1 -ct 2"
+    );
 cmp_ok( $res->return_code, '==', 2, "Webserver $hostname_invalid not valid" );
 # The first part of the message comes from the OS catalogue, so cannot check this.
 # On Debian, it is Name or service not known, on Darwin, it is No address associated with nodename
diff --git a/plugins/t/check_load.t b/plugins/t/check_load.t
index 60837ef..bba8947 100644
--- a/plugins/t/check_load.t
+++ b/plugins/t/check_load.t
@@ -11,10 +11,12 @@ use NPTest;
 my $res;
 
 my $loadValue = "[0-9]+\.?[0-9]+";
-my $successOutput = "/^LOAD OK - load average: $loadValue, $loadValue, $loadValue/";
-my $failureOutput = "/^LOAD CRITICAL - load average: $loadValue, $loadValue, $loadValue/";
+my $successOutput = "/^LOAD OK - total load average: $loadValue, $loadValue, $loadValue/";
+my $successScaledOutput = "/^LOAD OK - scaled load average: $loadValue, $loadValue, $loadValue - total load average: $loadValue, $loadValue, $loadValue/";
+my $failureOutput = "/^LOAD CRITICAL - total load average: $loadValue, $loadValue, $loadValue/";
+my $failurScaledOutput = "/^LOAD CRITICAL - scaled load average: $loadValue, $loadValue, $loadValue - total load average: $loadValue, $loadValue, $loadValue/";
 
-plan tests => 11;
+plan tests => 13;
 
 $res = NPTest->testCmd( "./check_load -w 100,100,100 -c 100,100,100" );
 cmp_ok( $res->return_code, 'eq', 0, "load not over 100");
@@ -26,7 +28,7 @@ like( $res->output, $failureOutput, "Output OK");
 
 $res = NPTest->testCmd( "./check_load -r -w 0,0,0 -c 0,0,0" );
 cmp_ok( $res->return_code, 'eq', 2, "Load over 0 with per cpu division");
-like( $res->output, $failureOutput, "Output OK");
+like( $res->output, $failurScaledOutput, "Output OK");
 
 $res = NPTest->testCmd( "./check_load -w 100 -c 100,110" );
 cmp_ok( $res->return_code, 'eq', 0, "Plugin can handle non-triplet-arguments");
@@ -34,3 +36,8 @@ like( $res->output, $successOutput, "Output OK");
 like( $res->perf_output, "/load1=$loadValue;100.000;100.000/", "Test handling of non triplet thresholds (load1)");
 like( $res->perf_output, "/load5=$loadValue;100.000;110.000/", "Test handling of non triplet thresholds (load5)");
 like( $res->perf_output, "/load15=$loadValue;100.000;110.000/", "Test handling of non triplet thresholds (load15)");
+
+
+$res = NPTest->testCmd( "./check_load -w 100,100,100 -c 100,100,100 -r" );
+cmp_ok( $res->return_code, 'eq', 0, "load not over 100");
+like( $res->output, $successScaledOutput, "Output OK");
diff --git a/plugins/utils.c b/plugins/utils.c
index 17dd581..b4214c6 100644
--- a/plugins/utils.c
+++ b/plugins/utils.c
@@ -615,27 +615,27 @@ char *perfdata_uint64 (const char *label,
         char *data = NULL;
 
         if (strpbrk (label, "'= "))
-                xasprintf (&data, "'%s'=%ld%s;", label, val, uom);
+                xasprintf (&data, "'%s'=%" PRIu64 "%s;", label, val, uom);
         else
-                xasprintf (&data, "%s=%ld%s;", label, val, uom);
+                xasprintf (&data, "%s=%" PRIu64 "%s;", label, val, uom);
 
         if (warnp)
-                xasprintf (&data, "%s%lu;", data, warn);
+                xasprintf (&data, "%s%" PRIu64 ";", data, warn);
         else
                 xasprintf (&data, "%s;", data);
 
         if (critp)
-                xasprintf (&data, "%s%lu;", data, crit);
+                xasprintf (&data, "%s%" PRIu64 ";", data, crit);
         else
                 xasprintf (&data, "%s;", data);
 
         if (minp)
-                xasprintf (&data, "%s%lu;", data, minv);
+                xasprintf (&data, "%s%" PRIu64 ";", data, minv);
         else
                 xasprintf (&data, "%s;", data);
 
         if (maxp)
-                xasprintf (&data, "%s%lu", data, maxv);
+                xasprintf (&data, "%s%" PRIu64, data, maxv);
 
         return data;
 }
@@ -656,27 +656,27 @@ char *perfdata_int64 (const char *label,
         char *data = NULL;
 
         if (strpbrk (label, "'= "))
-                xasprintf (&data, "'%s'=%ld%s;", label, val, uom);
+                xasprintf (&data, "'%s'=%" PRId64 "%s;", label, val, uom);
         else
-                xasprintf (&data, "%s=%ld%s;", label, val, uom);
+                xasprintf (&data, "%s=%" PRId64 "%s;", label, val, uom);
 
         if (warnp)
-                xasprintf (&data, "%s%ld;", data, warn);
+                xasprintf (&data, "%s%" PRId64 ";", data, warn);
         else
                 xasprintf (&data, "%s;", data);
 
         if (critp)
-                xasprintf (&data, "%s%ld;", data, crit);
+                xasprintf (&data, "%s%" PRId64 ";", data, crit);
         else
                 xasprintf (&data, "%s;", data);
 
         if (minp)
-                xasprintf (&data, "%s%ld;", data, minv);
+                xasprintf (&data, "%s%" PRId64 ";", data, minv);
         else
                 xasprintf (&data, "%s;", data);
 
         if (maxp)
-                xasprintf (&data, "%s%ld", data, maxv);
+                xasprintf (&data, "%s%" PRId64, data, maxv);
 
         return data;
 }