Manual: kill

KILL(1)							User Commands						     KILL(1)

NAME
       kill - send a signal to a process

SYNOPSIS
       kill [options]  [...]

DESCRIPTION
       The  default  signal  for kill is TERM.	Use -l or -L to list available signals.	 Particularly useful signals include
       HUP, INT, KILL, STOP, CONT, and 0.  Alternate signals may be specified in three ways: -9, -SIGKILL or  -KILL.   Nega‐
       tive 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.

OPTIONS
        [...]
	      Send signal to every  listed.

       -
       -s 
       --signal 
	      Specify  the signal to be sent.  The signal can be specified by using name or number.  The behavior of signals
	      is explained in signal(7) manual page.

       -q, --queue value
	      Use sigqueue(3) rather than kill(2) and the value argument is used to specify an integer to be sent  with	 the
	      signal.  If  the receiving process has installed a handler for this signal using the SA_SIGINFO flag to sigac‐
	      tion(2), then it can obtain this data via the si_value field of the siginfo_t structure.

       -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 de‐
	      scribed here as /bin/kill to solve the conflict.

       If you use negative PID values, you will need to specify a signal as well so that kill knows if the option is for the
       PID or the signal number. For example, issuing the command with the single option -9 it is not clear if you mean sig‐
       nal 9 (SIGKILL) or process group 9.

EXAMPLES
       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 -SIGTERM -123
	      Send the signal SIGTERM to process group 123. The signal name or number  is  required  if	 specifying  process
	      groups with a negative PID.

SEE ALSO
       kill(2), killall(1), nice(1), pkill(1), renice(1), signal(7), sigqueue(3), skill(1)

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

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

REPORTING BUGS
       Please send bug reports to procps@freelists.org

procps-ng						 2023-01-16						     KILL(1)