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Full Discussion: Grep a portion of the log file
Top Forums UNIX for Advanced & Expert Users Grep a portion of the log file Post 302298569 by vidyadhar85 on Wednesday 18th of March 2009 02:38:47 AM
Old 03-18-2009
Quote:
Originally Posted by sainipardeep
Thanks Vidhya
But I dont know much about these editors. I am trying for a pattern like

grep -n "745100000000013" filename | while read line
do
echo "Line is --$LINE--"
done > outputfilename
try that awk or what you are trying to do is
Code:
 
grep -n "pattern" filename|awk -F":" '{print $1}' > temp_123
while read line ; do
li=$line
sed -n "$line,$((line+10))p" filename
echo "-----------------------------------------"
sed -n "$((li-10)),$((li))p" filename
done < temp_123

 

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LEARN ABOUT LINUX

bzfgrep

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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