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Full Discussion: execution problem with grep
Top Forums Shell Programming and Scripting execution problem with grep Post 302581368 by mobitron on Tuesday 13th of December 2011 04:51:17 AM
Old 12-13-2011
Quote:
Originally Posted by kavi.mogu
HTML Code:
how to use grep word from  sentence  

grep -o "hai" haighaihaihai

Is above cmd possible in linux ?

can any one help me?

Thanks,
Code:
echo "haighaihaihai" | grep -o "hai"

 

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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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