UNIX Signals
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This list was taken from <sys/signal.h> on FreeBSD 7.1-RELEASE, but should be common to any POSIX system
- SIGHUP (hangup)
- SIGINT (interrupt)
- SIGQUIT (quit)
- SIGILL (illegal instruction)
- SIGTRAP (trace trap)
- SIGABRT (abort())'
- SIGIOT (another name for SIGABRT; for compatibility)
- SIGEMT (EMT instruction)
- SIGFPE (floating point exception)
- SIGKILL (kill - cannot be caught or ignored - of the infamous 'kill -9')
- SIGBUS (bus error)
- SIGSEGV (segmentation violation / segfault)
- SIGSYS (non-existent system call invoked)
- SIGPIPE (write on a pipe with no one to read it)
- SIGALRM (alarm clock)
- SIGTERM (software termination signal; use this before SIGKILL)
- SIGURG (urgent condition on IO channel)
- SIGSTOP (sendable stop signal NOT from TTY)
- SIGTSTP (stop signal from tty)
- SIGCONT (continue a stopped process)
- SIGCHLD (to parent, on child stop or exit)
- SIGTTIN (to readers process group upon background tty read)
- SIGTTOU
- SIGIO (input/output possible signal)
- SIGXCPU (exceeded CPU time limit)
- SIGXFSZ (exceeded file size limit)
- SIGVTALRM (virtual time alarm)
- SIGPROF (profiling time alarm)
- SIGWINCH (window size changes)
- SIGINFO (information request)
- SIGUSR1 (user defined signal 1)
- SIGUSR2 (user defined signal 2)
- SIGTHR (reserved by threading library)