Exploring the grep options Post: 302652661

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Top Forums UNIX for Dummies Questions & Answers Exploring the grep options Post 302652661 by SankalpS on Thursday 7th of June 2012 01:13:33 PM

06-07-2012

Registered User

Quote:

Originally Posted by rangarasan

Hi,
Try this,

Code:

grep 'pattern' path/file
awk '/pattern/{t=1;print;}END{if(t!=1){print "pattern not found";}}' path/file

Cheers,
Ranga:-)

Hi Ranga,
Thanks a lot can you also please explain what the second line of command is doing..!! Is there any one line command that will do the task, i dont want to run a script for this..!

SankalpS

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LEARN ABOUT PLAN9

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  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other 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 the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

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

																	  ZGREP(1)