[WBEL-users] Another Shell Scripting Question

[Vincent Raffensberger]

'pgrep' will give you the pid:
 
$ pgrep ntpd
2106
 
'pkill' could kill it for you.  See the manpage.
 
If you want specific ps info for a process, you could ask for it along
with the fields you want instead of using cut or awk.
See the manpage for all the different fields you can select.  Here's an
example:
 
$ ps -p `pgrep ntpd` -o pcpu,pmem,start,pid,cmd
%CPU %MEM  STARTED   PID CMD
 0.0  0.2   Jun 13  2106 ntpd -N -b -g -u ntp:ntp -p /var/run/ntpd.pid
 
If you must grep the full ps output, you can omit the grep process like
this:
 
$ ps aux | grep [n]tp
ntp       2106  0.0  0.2  5052 5052 ?        SLs  Jun13   0:01 ntpd -N
-b -g -u ntp:ntp


________________________________

From: whitebox-users-bounces at beau.org
[mailto:whitebox-users-bounces at beau.org] On Behalf Of Andrew Vong
Sent: Wednesday, June 15, 2005 9:56 AM
To: whitebox-users at beau.org
Subject: [WBEL-users] Another Shell Scripting Question



Dear Gurus,

Thanks for all who responded to my previous question. It worked great! 

I am now trying to perform a "ps aux | grep "some regular expression" |
cut -f 2 -d ......"

I seem to be having 2 problems. 

1) What delimiter should I define for cut? I've tried " " (space) but
that does not work.
2) I usually get 2 processes listed. The actualy one I'm looking for and
the line I just executed. How can I exclude the 2nd process which also
contains the same "grep regular expression" ?

The above is part of a longer one-liner command I'm trying to construct.
I basically want to kill a specific process and I just want to obtain
the PID for it. So, it may end up looking like this??

$ ps aux | grep "some regular expression" | cut -f 2 -d ...... | xargs
kill -9

Or something along those lines... 

Hope someone out there can help me. 

Thanks again. :)

Best Regards,
Andrew


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