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Linux 2.6 - man page for killall (linux section 1)

KILLALL(1)				  User Commands 			       KILLALL(1)

NAME
       killall - kill processes by name

SYNOPSIS
       killall [-Z,--context pattern] [-e,--exact] [-g,--process-group] [-i,--interactive]
       [-o,--older-than TIME] [-q,--quiet] [-r,--regexp] [-s,--signal signal] [-u,--user user]
       [-v,--verbose] [-w,--wait] [-y,--younger-than TIME] [-I,--ignore-case] [-V,--version] [--]
       name ...
       killall -l
       killall -V,--version

DESCRIPTION
       killall sends a signal to all processes running any of the specified commands. If no  sig-
       nal name is specified, SIGTERM is sent.

       Signals	can be specified either by name (e.g. -HUP or -SIGHUP ) or by number (e.g. -1) or
       by option -s.

       If the command name is not regular expression (option -r) and contains a slash  (/),  pro-
       cesses  executing  that particular file will be selected for killing, independent of their
       name.

       killall returns a zero return code if at least one process has been killed for each listed
       command,  or no commands were listed and at least one process matched the -u and -Z search
       criteria. killall returns non-zero otherwise.

       A killall process never kills itself (but may kill other killall processes).

OPTIONS
       -e, --exact
	      Require an exact match for very long names. If a command name  is  longer  than  15
	      characters,  the	full  name  may  be unavailable (i.e. it is swapped out). In this
	      case, killall will kill everything that matches within  the  first  15  characters.
	      With -e, such entries are skipped.  killall prints a message for each skipped entry
	      if -v is specified in addition to -e,

       -I, --ignore-case
	      Do case insensitive process name match.

       -g, --process-group
	      Kill the process group to which the process belongs. The kill signal is  only  sent
	      once per group, even if multiple processes belonging to the same process group were
	      found.

       -i, --interactive
	      Interactively ask for confirmation before killing.

       -l, --list
	      List all known signal names.

       -o, --older-than
	      Match only processes that are older (started before) the time specified.	The  time
	      is  specified as a float then a unit. The units are s,m,h,d,w,M,y for seconds, min-
	      utes, hours, days, weeks, Months and years respectively.

       -q, --quiet
	      Do not complain if no processes were killed.

       -r, --regexp
	      Interpret process name pattern as an extended regular expression.

       -s, --signal
	      Send this signal instead of SIGTERM.

       -u, --user
	      Kill only processes the specified user owns. Command names are optional.

       -v, --verbose
	      Report if the signal was successfully sent.

       -V, --version
	      Display version information.

       -w, --wait
	      Wait for all killed processes to die. killall checks once per second if any of  the
	      killed  processes still exist and only returns if none are left.	Note that killall
	      may wait forever if the signal was ignored, had no effect, or if the process  stays
	      in zombie state.

       -y, --younger-than
	      Match  only  processes that are older (started after) the time specified.  The time
	      is specified as a float then a unit. The units are s,m,h,d,w,M,y for seconds,  min-
	      utes, hours, days, weeks, Months and years respectively.

       -Z, --context
	      (SELinux	Only)  Specify security context: kill only processes having security con-
	      text that match with given expended regular expression pattern. Must precede  other
	      arguments on the command line. Command names are optional.

FILES
       /proc	 location of the proc file system

KNOWN BUGS
       Killing	by  file  only	works  for  executables that are kept open during execution, i.e.
       impure executables can't be killed this way.

       Be warned that typing killall name may not have the desired effect on  non-Linux  systems,
       especially when done by a privileged user.

       killall	-w  doesn't  detect if a process disappears and is replaced by a new process with
       the same PID between scans.

       If processes change their name, killall may not be able to match them correctly.

AUTHORS
       Werner Almesberger <werner@almesberger.net> wrote the original version  of  psmisc.  Since
       version 20 Craig Small <csmall@enc.com.au> can be blamed.

SEE ALSO
       kill(1), fuser(1), pgrep(1), pidof(1), pkill(1), ps(1), kill(2).

Linux					    2011-02-22				       KILLALL(1)


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