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 (as killall5) is a particularly dangerous command that 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 program.

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Unix command-line interface programs and shell builtins

File system	cat cd chmod chown chgrp cksum cmp cp dd du df file fsck fuser ln ls mkdir mount mv pax pwd rm rmdir size split tee touch type umask

Processes	at bg chroot cron fg kill killall nice pgrep pkill ps pstree time top

User environment	clear env exit finger history id logname mesg passwd su sudo uptime talk tput uname w wall who whoami write

Text processing	awk banner basename comm csplit cut diff dirname ed ex fmt fold head iconv join less more nl paste sed sort spell strings tail tr uniq vi wc xargs

Shell builtins	alias echo expr printf sleep test true and false unset wait yes

Networking	dig host ifconfig inetd netcat netstat nslookup ping rdate rlogin route ssh traceroute

Searching	find grep locate whatis whereis

Documentation	apropos help man

Miscellaneous	bc dc cal lp od

List of Unix utilities