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 -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 (/), 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-