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Full Discussion: grep usage - exit after first occurrence
Top Forums UNIX for Dummies Questions & Answers grep usage - exit after first occurrence Post 56796 by nhatch on Tuesday 12th of October 2004 08:00:00 AM
Old 10-12-2004
grep usage - exit after first occurrence
Hi,

Is there any way of using grep (this may be done in awk, not sure?) that I can stop grep'n a file once I have found the first occurrence of my search string. Looking through grep man pages
-q will exit without printing the lines after the first match, but I need the output.

I have looked at awk but am not finding what i require.

Any ideas,

Cheers and beers,

Neil
 

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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)
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