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.
Hi ,
You can use this:
kill -9 `netstat -antp|grep 8080|grep java|awk '{ print $7 }'|cut
-d'/' -f
1`
But if had to do the same thing I would search in the running processes
instead using netstat, anyway you can extract the pid in the same way.
Silviu
On Tue, Sep 28, 2010 at 7:14 PM, Carlos S <neubyr at gmail.com> 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.
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> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
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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} > donefuser requires root access. For more, "man fuser" -- Jay Leafey - jay.leafey at mindless.com Memphis, TN -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 5529 bytes Desc: S/MIME Cryptographic Signature URL: <http://lists.centos.org/pipermail/centos/attachments/20100928/6795b5aa/attachment.bin>
Silviu Hutanu wrote:> Hi , > > You can use this: > > kill -9 `netstat -antp|grep 8080|grep java|awk '{ print $7 }'|cut -d'/' -f > 1` > > But if had to do the same thing I would search in the running processes > instead using netstat, anyway you can extract the pid in the same way. >Yeah, but don't forget you may have shared memory, etc, left laying around. Those need to be cleaned out as well. mark