SIGQUIT

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SIGQUIT
Description Terminal quit signal
Default action Abnormal termination of the process
SA_SIGINFO macros
None

SIGQUIT is a signal used on POSIX-compliant platforms to indicate a request by a user for a process to dump core. The symbolic constant for SIGQUIT is defined in the header file signal.h; on the vast majority of systems it is signal #3.

SIGQUIT can usually be induced with Ctrl-\. On Linux, one may also use Ctrl-4 or, on the virtual console, the SysRq key.

[edit] Etymology

SIG is a common prefix for signal names.

[edit] See also

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Computing signals
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SIGABRT · SIGALRM · SIGFPE · SIGHUP · SIGILL · SIGINT · SIGKILL · SIGPIPE · SIGQUIT · SIGSEGV · SIGTERM · SIGUSR1 · SIGUSR2 · SIGCHLD · SIGCONT · SIGSTOP · SIGTSTP · SIGTTIN · SIGTTOU · SIGBUS · SIGPOLL · SIGPROF · SIGSYS · SIGTRAP · SIGURG · SIGVTALRM · SIGXCPU · SIGXFSZ · Realtime signals are user definable (SIGRTMIN+n through SIGRTMAX)
non-POSIX
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