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[FEATURE] Signal utilisation #25

@mikeybob

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@mikeybob

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Header Header Header Header Header
SIGHUP (1): Hangup detected on controlling terminal or death of controlling process.
SIGINT (2): Interrupt from keyboard (Ctrl+C).
SIGQUIT (3): Quit from keyboard (produces core dump).
SIGILL (4): Illegal Instruction.
SIGABRT (6): Abort signal from abort(3).
SIGFPE (8): Floating-point exception.
SIGKILL (9): Kill signal (cannot be caught or ignored).
SIGSEGV (11): Invalid memory reference.
SIGPIPE (13): Broken pipe: write to pipe with no readers.
SIGALRM (14): Timer signal from alarm(2).
SIGTERM (15): Termination signal (default for kill).
SIGUSR1 (10) User-defined signals.
SIGUSR2 (12): User-defined signals.

Commandline syntax:

kill -SIGUSR1 <pid>
kill -10 <pid>

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