Signals

No	Name	Comment
1	SIGHUP (*)	hangup
2	SIGINT (*)	interrupt
3	SIGQUIT (*)	quit
4	SIGILL (*)	illegal instruction (not reset when caught)
5	SIGTRAP	trace trap (not reset when caught)
6	SIGABRT (*), SIGIOT	abort()
7	SIGEMT	EMT instruction
8	SIGFPE (*)	floating point exception
9	SIGKILL (*)	kill (cannot be caught or ignored)
10	SIGBUS	bus error
11	SIGSEGV (*)	segmentation violation
12	SIGSYS	bad argument to system call
13	SIGPIPE (*)	write on a pipe with no one to read it
14	SIGALRM (*)	alarm clock
15	SIGTERM (*)	software termination signal from kill
16	SIGURG	urgent condition on IO channel
17	SIGSTOP (*)	sendable stop signal not from tty
18	SIGTSTP (*)	stop signal from tty
19	SIGCONT (*)	continue a stopped process
20	SIGCHLD (*)	to parent on child stop or exit
21	SIGTTIN (*)	to readers pgrp upon background tty read
22	SIGTTOU (*)	like TTIN for output if (tp->t_local&LTOSTOP)
23	SIGIO	input/output possible signal
24	SIGXCPU	exceeded CPU time limit
25	SIGXFSZ	exceeded file size limit
26	SIGVTALRM	virtual time alarm
27	SIGPROF	profiling time alarm
28	SIGWINCH	window size changes
29	SIGINFO	information request
30	SIGUSR1 (*)	user defined signal 1
31	SIGUSR2 (*)	user defined signal 2

(*) POSIX compatible