KILLALL(1) User Commands KILLALL(1)
killall - kill processes by name
killall [-Z,--context pattern] [-e,--exact] [-g,--process-group]
[-i,--interactive] [-q,--quiet] [-r,--regexp] [-s,--signal signal]
[-u,--user user] [-v,--verbose] [-w,--wait] [-I,--ignore-case]
[-V,--version] [--] name ...
killall sends a signal to all processes running any of the specified
commands. If no signal name is specified, SIGTERM is sent.
Signals can be specified either by name (e.g. -HUP) or by number (e.g.
-1) or by option -s.
If the command name is not regular expression (option -r) and contains
a slash (/), processes 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-
A killall process never kills itself (but may kill other killall pro
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 every
thing 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,
Do case insensitive process name match.
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.
Interactively ask for confirmation before killing.
List all known signal names.
Do not complain if no processes were killed.
Interpret process name pattern as an extended regular expres
Send this signal instead of SIGTERM.
Kill only processes the specified user owns. Command names are
Report if the signal was successfully sent.
Display version information.
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.
(SELinux Only) Specify security context: kill only processes
having security context that match with given expended regular
expression pattern. Must precede other arguments on the command
line. Command names are optional.
/proc location of the proc file system
Killing by file only works for executables that are kept open during
execution, i.e. impure executables cant 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 doesnt 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
Werner Almesberger wrote the original version
of psmisc. Since version 20 Craig Small
can be blamed.
kill(1), fuser(1), pgrep(1), pidof(1), pkill(1), ps(1), kill(2).
Linux 2004-11-09 KILLALL(1)