UNIX Signals

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)