KILLALL(1) User Commands KILLALL(1)
killall - kill processes by name
killall [-e,--exact] [-g,--process-group] [-i,--interactive] [-q,--quiet] [-v,--verbose]
[-w,--wait] [-V,--version] [-S,--sid] [-c,--context] [-s,--signal signal] [--] name ...
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 by number (e.g. -1).
If the command name 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
ilisted command. killall returns zero otherwise.
A killall process never kills itself (but may kill other killall processes).
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,
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
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.
-S (Flask only) Specify SID: kill only processes with given SID. Mutually exclusive
with -c argument. Must precede other arguments on command line.
-c (Flask only) Specify security context: kill only processes with given security con-
text. Mutually exclusive with -s. Must precede other arguments on the command
/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 <Werner.Almesberger@epfl.ch> wrote the original version of psmisc.
Since version 20 Craig Small <email@example.com> can be blamed.
kill(1), fuser(1), pgrep(1), pidof(1), ps(1), kill(2)
Linux March 25, 2001 KILLALL(1)