What is "killall"

'''killall''' is a command line utility available on Unix-like systems. There are two very different implementations.

• The implementation supplied with genuine UNIX System V (including Solaris) and with the Linux sysvinit tools kills all processes that the user is able to kill, effectively shutting down the system if run by root.
• The implementation supplied with the FreeBSD (including Mac OS X) and Linux psmisc tools is similar to the [[pkill]] and skill commands, killing only the processes specified on the command line.

Both commands operate by sending a signal, like the [[Kill (command)|kill]] program.