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Full Discussion: grep searching
Top Forums Shell Programming and Scripting grep searching Post 302403827 by Learnerabc on Monday 15th of March 2010 12:39:08 AM
Old 03-15-2010
i tried but it's not working. when i use egrep or grep -E it does not return anything.
The problem is like this.
Code:
some command | some command | some command | grep -E  '( [0-9]\{3\}-[0-9]\{2\}-[0-9]\{3\} |[0-9]\{9\})'

This does not return anything

but if i do separately then both works
Code:
some command | some command | some command | grep  '( [0-9]\{3\}-[0-9]\{2\}-[0-9]\{3\} '

Code:
some command | some command | some command | grep [0-9]\{9\})'

 

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LEARN ABOUT REDHAT

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.  If no file is speci-
       fied, 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  zgrep  is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, zgrep uses
       it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	zgrep string files
	   for csh: (setenv GREP fgrep; zgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)

																	  ZGREP(1)
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