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Top Forums UNIX for Dummies Questions & Answers [Solved] How to remove listing of current user cmd from ps -ef listing? Post 302769151 by gary_w on Monday 11th of February 2013 10:26:25 AM
Old 02-11-2013
An attempt to shed more light on why RudiC's method is preferred.

Less overhead as a pipeline does not need to be created. grep is only called once.

The pattern [M]Q matches a string starting with a capital M followed by a Q. It does not match itself (as would be shown in a ps -ef) as the grep pattern starts with a '[', not an M.

Last edited by gary_w; 02-11-2013 at 11:32 AM..
 

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BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME
bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression SYNOPSIS
bzgrep [ grep_options ] [ -e ] pattern filename... bzegrep [ egrep_options ] [ -e ] pattern filename... bzfgrep [ fgrep_options ] [ -e ] pattern filename... DESCRIPTION
Bzgrep is used to invoke the grep on bzip2-compressed files. All options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If bzgrep is invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, bzgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep bzgrep string files for csh: (setenv GREP fgrep; bzgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux. SEE ALSO
grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1) BZGREP(1)
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