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On this particular big box:HP-UX frank B.11.00 U 9000/800 75635 unlimited-user license
Which as you see is HP-UX 11, killall is totally different that the linux killall. As we see from the manpage:
NAME killall - kill all active processes SYNOPSIS /usr/sbin/killall [signal] DESCRIPTION killall is a procedure used by /usr/sbin/shutdown to kill all ac +tive processes not directly related to the shutdown procedure. killall is chiefly used to terminate all processes with open fil +es so that the mounted file systems are no longer busy and can be unmo +unted. killall sends the specified signal to all user processes in the system, with the following exceptions: the init process; all processes (including background processes) associated w +ith the terminal from which killall was invoked; any ps -ef process, if owned by root; any sed -e process, if owned by root; any shutdown process; any killall process; any /sbin/rc process. killall obtains its process information from ps, and therefore m +ay not be able to perfectly identify which processes to signal (see ps( +1)). If no signal is specified, a default of 9 (kill) is used. killall is invoked automatically by shutdown The use of shutdown + is recommended over using killall by itself (see shutdown(1M)). FILES /usr/sbin/shutdown SEE ALSO fuser(1M), kill(1), ps(1), shutdown(1M), signal(5). STANDARDS CONFORMANCE killall: SVID2, SVID3 Hewlett-Packard Company - 1 - HP-UX Release 11.00: Octobe +r 1997
So, what it does is basically destroys all stubborn running processes still left during a system shutdown. Certainly not the same thing as a Linux killall, which really is just (as far as I can tell) a fancy signal sending multiplexer.

On a marginally related note, be careful and stingy with your kill -9 (and killall's as well)... lest you find yourself recepient of merlyn's Useless use of kill award :)

In reply to Re: Re: Re: Zombie Hunter (666th post) killall might be dangerous by eduardo
in thread Zombie Hunter (666th post) by jeffa

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