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1 | title: Code reuse | ||
2 | parent: FAQ | ||
3 | --- | ||
4 | |||
5 | # Can I use Nagios Plugins in my project? | ||
6 | |||
7 | Firstly, there is a distinction between a Nagios plugin and plugins from the | ||
8 | Nagios Plugins project. | ||
9 | |||
10 | Although Nagios (the system) is licensed under the GPL, plugins are executed | ||
11 | in their own environment, so they [do not fall][aggregation] under the "viral" | ||
12 | aspect of the GPL. Therefore, any plugin written for use by Nagios can be | ||
13 | under any license the copyright holder selects. | ||
14 | |||
15 | However, the plugins contained within the Nagios Plugins project are | ||
16 | distributed under the [GPL][gpl]. If you distribute an application that | ||
17 | includes the Nagios Plugins (modified or not), you are required to distribute | ||
18 | a copy of the source code for the plugins under the terms of the GPL, | ||
19 | regardless of the licensing for the rest of the application. | ||
20 | |||
21 | If you write a plugin which is a derivative work from code of the Nagios | ||
22 | Plugins project, then your plugin must also be licensed under the GPL, | ||
23 | although you own the copyright for your modified portions. | ||
24 | |||
25 | *Derivative work* usually includes: | ||
26 | |||
27 | * modified versions of the plugins | ||
28 | * other software that contains code (modified or not) copied from the plugins | ||
29 | * other software that `#include`s header files from the plugins | ||
30 | * other software that has linked against library files from the plugins | ||
31 | |||
32 | and does not usually include: | ||
33 | |||
34 | * other software that parses the output of a plugin run from the command line, | ||
35 | exit status, etc. | ||
36 | * software that provides a "wrapper" for command line execution of the plugin | ||
37 | * software that uses status codes and other values which are in the header | ||
38 | files, but also described in the documentation (though not including or | ||
39 | linking to the source) | ||
40 | |||
41 | [aggregation]: http://www.gnu.org/licenses/gpl-faq.html#MereAggregation "GPL FAQ: Mere Aggregation" | ||
42 | [gpl]: http://www.gnu.org/licenses/gpl.html "GPLv3" | ||
43 | |||
44 | <!--% # vim:set filetype=markdown textwidth=78 joinspaces: # %--> | ||