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Top Forums Shell Programming and Scripting Extract pattern from text line Post 302246781 by vampirodolce on Tuesday 14th of October 2008 11:17:42 AM
Old 10-14-2008
Quote:
Originally Posted by tayyabq8
Why don't you try radoulov's solutions, both solutions are more efficient.
You're right, it took less than one second :| How is this possible??
 

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EXIGREP(8)						      System Manager's Manual							EXIGREP(8)

NAME
EXIGREP - Search Exim's main log SYNOPSIS
exigrep [-l] pattern [log file] ... DESCRIPTION
The exigrep utility is a Perl script that searches one or more main log files for entries that match a given pattern. When it finds a match, it extracts all the log entries for the relevant message, not just those that match the pattern. Thus, exigrep can extract complete log entries for a given message, or all mail for a given user, or for a given host, for example. The -l flag means 'literal', that is, treat all characters in the pattern as standing for themselves. Otherwise the pattern must be a Perl regular expression. The pattern match is case-insensitive. If no file names are given on the command line, the standard input is read. If the location of a zcat command is known from the definition of ZCAT_COMMAND in Local/Makefile, exigrep automatically passes any file whose name ends in COMPRESS_SUFFIX through zcat as it searches it. BUGS
This manual page needs a major re-work. If somebody knows better groff than us and has more experience in writing manual pages, any patches would be greatly appreciated. SEE ALSO
exim(8), perlre(1), /usr/share/doc/exim4-base/ AUTHOR
This manual page was stitched together from spec.txt by Andreas Metzler <ametzler at downhill.at.eu.org>, for the Debian GNU/Linux system (but may be used by others). March 26, 2003 EXIGREP(8)
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