How to extract the PID from 'ps -ef' Post: 302096860

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Top Forums Shell Programming and Scripting How to extract the PID from 'ps -ef' Post 302096860 by aigles on Monday 20th of November 2006 04:43:48 AM

11-20-2006

Registered User

Quote:

Originally Posted by nsinha

Hi

I am writing a shell script in ksh where I have to grep for a process name , say XYZ from "ps -ef" and then extract it's PID.

ps -ef | grep XYZ gives -
" int 7738 25734 1 02:00:49 pts/tc 0:00 grep XYZ"

I am thinking of replacing one or more occurrences of the space with pipe "|", so the output will be -
|int|7738|25734|1|02:00:49|pts/tc|0:00|grep|XYZ

Then I want to use the "cut -d"|" -f3 which will give 7738, the PID.

But I am not able to replace one or more occurrences of the space with a single pipe. I have tried in many many different ways, but I am in vain.

Can you please show me the way how it can be done ?

Thanking you in advance ...
Nirmalya

To replace spaces with pipe :

Code:

ps -ef | grep XYZ | sed 's/  */|/g'

I suggest you to use awk solution posted by Yogesh Sawant.

Your command will always returns the grep process, to avoid that you can use the following grep syntax :

Code:

ps -ef | grep [X]YZ

Jean-Pierre.

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LEARN ABOUT X11R4

suspend

suspend(1)                                                         User Commands                                                        suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                         suspend(1)

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