Linux Signals

External

• https://en.wikipedia.org/wiki/Unix_signal

Internal

• Linux General Concepts

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.

SIGKILL (9)

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

SIGUSR1 (10)

httpd Graceful Restart

SIGTERM (15)

httpd Stop Now

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

Signals in Go

Signals in Go