[CentOS] netstat - kill by pid ?
Jay Leafey
jay.leafey at mindless.com
Tue Sep 28 16:22:01 UTC 2010
Carlos S wrote:
> I am writing a small script to kill process(es) listening on
> particular port number. Here I am particularly looking at Java
> servlet-containers like Tomcat and JBoss, which sometimes don't
> complete their shutdown process and it still shows up as running
> process with ps or netstat. This needs to be kill-ed and for that
> knowing pid of that process is necessary. The netstat by default
> doesn't give only pid(s), so one has to use sed/awk/tr like utility to
> extract pid info. Does anyone know any program/utility which gives
> pid(s) based on listening port numbers? Or is there any option in
> netstat that I am missing?
>
> Thanks,
> CS.
fuser will do what you want. If you were looking for something
listening on port 80, for instance:
> [root at server ~]# fuser -n tcp 80
> 80/tcp: 3420 3718 3719 3721 3722 3723 3725 3726 3727
> [root at server ~]#
The banner ( "80/tcp:" ) is sent to STDERR and the actual PIDs to
STDOUT, so you could do something like this:
> for procpid in $( fuser -n tcp 80 2>/dev/null )
> do
> kill ${procpid}
> done
fuser requires root access.
For more, "man fuser"
--
Jay Leafey - jay.leafey at mindless.com
Memphis, TN
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