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Full Discussion: awk get search pattern from a file.
Top Forums Shell Programming and Scripting awk get search pattern from a file. Post 302666297 by balajesuri on Wednesday 4th of July 2012 05:48:27 AM
Old 07-04-2012
Quote:
Originally Posted by togotutor
Query --> I want to search for a string in a file and print next 15 lines below the matched string.
With whatever little awk knowledge I have, this is what I could assimilate into a solution:
Code:
awk '/pattern/ {c=0; f=1; print; next} f==1 && c<=15 {print; c++} c==15 {exit}' inputfile

After a bit of googling, I found a solution in this link.
Code:
awk '/pattern/{c=15;{print}next}c-->0' inputfile

Last edited by balajesuri; 07-04-2012 at 06:57 AM..
 

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LEARN ABOUT DEBIAN

bzgrep

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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