KILLALL(1) User Commands KILLALL(1)
killall - kill processes by name
killall [-c,--context] [-e,--exact] [-g,--process-group] [-i,--interac-
tive] [-q,--quiet] [-s,--signal signal] [-v,--verbose] [-w,--wait]
[-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.
If the command name contains a slash (/), processes executing that par-
ticular 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. killall returns non-zero otherwise.
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.
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.
-Z (SELinux Only) Specify security context: kill only processes
with given security context. Must precede other arguments on
the command line.
/proc location of the proc file system
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.
Werner Almesberger <firstname.lastname@example.org> wrote the original version
of psmisc. Since version 20 Craig Small <email@example.com>
can be blamed.
Linux September 26, 2003 KILLALL(1)
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