Linux Signals

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External

Internal

Signals

SIGHUP (1)

POSIX signal. Hangup.

Hangup is the signal that is sent to the process when the terminal closes on a foreground process.

Also see:

nohup
httpd Restart Now

SIGINT (2)

Sends the process an interrupt. Guaranteed to be present on all systems.

SIGQUIT (3)

SIGILL (4)

SIGTRAP (5)

SIGFPE (8)

SIGKILL (9)

POSIX. Kill the process. The signal cannot be caught or ignored. Guaranteed to be present on all systems.

SIGUSR1 (10)

Also see:

httpd Graceful Restart

SIGSEGV (11)

SIGUSR2 (12)

SIGPIPE (13)

SIGALRM (14)

SIGTERM (15)

Also see:

httpd Stop Now

SIGSTKFLT (16)

SIGCHLD (17)

SIGCONT (18)

POSIX. Continue executing, if stopped.

Also see:

Suspending JVM Execution

SIGSTOP (19)

POSIX. Stop executing. The signal cannot be caught or ignored.

Also see:

Suspending JVM Execution

SIGTSTP (20)

SIGTTIN (21)

SIGTTOU (22)

SIGURG (23)

SIGXCPU (24)

SIGXFSZ (25)

SIGVTALRM (26)

SIGPROF (27)

SIGWINCH (28)

Also see:

httpd Graceful Stop

SIGIO (29)

SIGPWR (30)

SIGSYS (31)

SIGRTMIN (34)

Signals in Go

Signals in Go