Grep log file to get line above matching pattern Post: 302955810

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comment/delete a particular pattern starting from second line of the matching pattern

Hi, I have file 1.txt with following entries as shown: 0152364|134444|10.20.30.40|015236433 0233654|122555|10.20.30.50|023365433 ** ** ** In file 2.txt I have the following entries as shown: 0152364|134444|10.20.30.40|015236433 0233654|122555|10.20.30.50|023365433...

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LEARN ABOUT NETBSD

zgrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

comment/delete a particular pattern starting from second line of the matching pattern

Discussion started by: imas

2. UNIX for Dummies Questions & Answers

grep only word matching the pattern

Discussion started by: poova

3. Shell Programming and Scripting

Grep the word from pattern line and update in subsequent lines till next pattern line reached

Discussion started by: rbalaj16

4. Shell Programming and Scripting

HELP: Shell Script to read a Log file line by line and extract Info based on KEYWORDS matching

Discussion started by: biztank