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Full Discussion: how to exclude the GREP command from GREP
Top Forums UNIX for Advanced & Expert Users how to exclude the GREP command from GREP Post 302139251 by xramm on Friday 5th of October 2007 02:59:40 AM
Old 10-05-2007
Quote:
Originally Posted by yamsin789
I am doing "ps -f" to see my process.
but I get lines that one of it represents the ps command itself.
I want to grep it out using -v flag, but than I get another process that belongs to the GREP itself :

I would like to exclude

[root@localhost ~]# ps -f
UID PID PPID C STIME TTY TIME CMD
root 15794 15792 0 13:48 pts/2 00:00:00 -bash
root 16157 15794 0 14:01 pts/2 00:00:00 ps -f

[root@localhost ~]# ps -f | grep -v ps
UID PID PPID C STIME TTY TIME CMD
root 15794 15792 0 13:48 pts/2 00:00:00 -bash
root 16160 15794 0 14:02 pts/2 00:00:00 -bash

while all I want is to get my pid line only.
or maybe you know another command that returns my pid and ppid only ?

thanks
I wonder ,Which flavor of Unix you use ? in the following example it is working:

Code:
[root@dns ~]# uname -a
Linux dns 2.6.22.5-76.fc7 #1 SMP Thu Aug 30 13:47:21 EDT 2007 i686 athlon i386 GNU/Linux
[root@dns ~]# ps -f | grep -v ps
UID        PID  PPID  C STIME TTY          TIME CMD
root      2593  2572  0 Oct04 pts/1    00:00:00 -bash

also works in HP Unix,
can you check this out:

[root@dns ~]# ps -f | grep -v ps |grep -v grep
UID PID PPID C STIME TTY TIME CMD
root 2593 2572 0 Oct04 pts/1 00:00:00 -bash
 

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LEARN ABOUT MINIX

ps

PS(1)							      General Commands Manual							     PS(1)

NAME

       ps - process status

SYNOPSIS

       ps [-alxU] [kernel mm fs]

OPTIONS

       -a     Print all processes with controlling terminals

       -l     Give long listing

       -x     Include processes without a terminal

EXAMPLES

       ps -axl		   # Print all processes and tasks in long format

DESCRIPTION

       Ps  prints the status of active processes.  Normally only the caller's own processes are listed in short format (the PID, TTY, TIME and CMD
       fields as explained below).  The long listing contains:

	 F  Kernel flags:	    001: free slot	     002: no memory map 	  004: sending; 	   010:  receiving	      020:
       inform on pending signals	   040: pending signals 	  100: being traced.

	 S	 State: 	   R: runnable		 W: waiting (on a message)	     S: sleeping (i.e.,suspended on MM or FS)		Z:
       zombie		T: stopped

	 UID, PID, PPID, PGRP	   The user, process, parent process and process group ID's.

	 SZ	 Size of the process in kilobytes.

	 RECV	   Process/task on which a receiving process is waiting or sleeping.

	 TTY	       Controlling tty for the process.

	 TIME	   Process' cumulative (user + system) execution time.

	 CMD	 Command line arguments of the process.

       The files /dev/{mem,kmem} are used to read the system tables and command line arguments from.  Terminal names in /dev are used to  generate
       the mnemonic names in the TTY column, so ps is independent of terminal naming conventions.

																	     PS(1)
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