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					KILL(1)                                                Linux User’s Manual                                  KILL(1)


NAME
          kill − send a signal to a process

SYNOPSIS
          kill [ −signal | −s signal ] pid ...
          kill [ −L | -V, −−version ]
          kill −l [ signal ]

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 −KILL. Negative PID values may be used to choose whole process groups; see the PGID col-
          umn in ps command output. A PID of −1 is special; it indicates all processes except the kill process itself
          and init.

SIGNALS
          The signals listed below may be available for use with kill. When known constant, numbers and default
          behavior are shown.

          Name          Num       Action         Description
          0                0      n/a            exit code indicates if a signal may be sent
          ALRM            14      exit
          HUP              1      exit
          INT              2      exit
          KILL             9      exit           cannot be blocked
          PIPE            13      exit
          POLL                    exit
          PROF                    exit
          TERM             15     exit
          USR1                    exit
          USR2                    exit
          VTALRM                  exit
          STKFLT                  exit           might not be implemented
          PWR                     ignore         might exit on some systems
          WINCH                   ignore
          CHLD                    ignore
          URG                     ignore
          TSTP                    stop           might interact with the shell
          TTIN                    stop           might interact with the shell
          TTOU                    stop           might interact with the shell
          STOP                    stop           cannot be blocked
          CONT                    restart        continue if stopped, otherwise ignore
          ABRT              6     core
          FPE               8     core
          ILL               4     core
          QUIT              3     core
          SEGV             11     core
          TRAP              5     core
          SYS                     core           might not be implemented
          EMT                     core           might not be implemented
          BUS                     core           core dump might fail
          XCPU                    core           core dump might fail




Linux                                                   November 21, 1999                                          1
KILL(1)                                             Linux User’s Manual                                  KILL(1)


          XFSZ                   core        core dump might fail

NOTES
          Your shell (command line interpreter) may have a built-in kill command. You may need to run the com-
          mand described here as /bin/kill to solve the conflict.

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.

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

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

AUTHOR
          Albert Cahalan <albert@users.sf.net> 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-feedback@lists.sf.net>




Linux                                                 November 21, 1999                                         2

				
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