Signal (IPC) (English Wikipedia)

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"IEEE Std 1003.1-2017 - kill". IEEE, Open Group. The correspondence between integer values and the sig value used is shown in the following list. The effects of specifying any signal_number other than those listed below are undefined.
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"perlipc(1)". Perl Programmers Reference Guide, version 5.18. perldoc.perl.org - Official documentation for the Perl programming language. Retrieved 21 September 2013.

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unix.stackexchange.com

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stackoverflow.com (Global: 4,643^rd place; English: 2,973^rd place)

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https://manpages.ubuntu.com/manpages/zesty/man2/kill.2.html Archived 28 January 2018 at the Wayback Machine section NOTES

Signal (IPC) (English Wikipedia)

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