KILL(1) - Linux man page online | User commands

Send a signal to a process.

October 2011
KILL(1) User Commands KILL(1)


kill - send a signal to a process


kill [options] <pid> [...]


The default signal for kill is TERM. Use -l or -L to list available signals. Particu‐ larly useful signals include HUP, INT, KILL, STOP, CONT, and 0. Alternate signals may be specified in three ways: -9, -SIGKILL or -KILL. Negative PID values may be used to choose whole process groups; see the PGID column in ps command output. A PID of -1 is special; it indicates all processes except the kill process itself and init.


<pid> [...] Send signal to every <pid> listed. -<signal> -s <signal> --signal <signal> Specify the signal to be sent. The signal can be specified by using name or num‐ ber. The behavior of signals is explained in signal(7) manual page. -l, --list [signal] List signal names. This option has optional argument, which will convert signal number to signal name, or other way round. -L, --table List signal names in a nice table. NOTES Your shell (command line interpreter) may have a built-in kill command. You may need to run the command described here as /bin/kill to solve the conflict.


kill -9 -1 Kill all processes you can kill. kill -l 11 Translate number 11 into a signal name. kill -L List the available signal choices in a nice table. kill 123 543 2341 3453 Send the default signal, SIGTERM, to all those processes.


kill(2), killall(1), nice(1), pkill(1), renice(1), signal(7), skill(1)


This command meets appropriate standards. The -L flag is Linux-specific.


Albert Cahalan ⟨⟩ wrote kill in 1999 to replace a bsdutils one that was not standards compliant. The util-linux one might also work correctly.


Please send bug reports to ⟨⟩
procps-ng October 2011 KILL(1)
This manual Reference Other manuals
kill(1) referred by and(8) | and.conf(5) | and.priorities(5) | arb-kill(1) | ax25d(8) | biboumi(1) | bup-web(1) | burgerspace-server(6) | cputool(8) | darkstat(8) | dcons(4freebsd) | ezstream(1) | ffproxy(8) | ffproxy.conf(5) | fuser(1) | hboot(1) | kill(2) | killall(1) | kissattach(8) | lamhalt(1)
refer to kill(2) | killall(1) | nice(1) | pgrep(1) | renice(1) | signal(7) | skill(1)
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