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Top Forums UNIX for Advanced & Expert Users How to perform Grep on many Gzip files, Searching for Specific information Post 302338382 by mglenney on Monday 27th of July 2009 07:05:23 PM
Old 07-27-2009
You might look at zgrep to simplify your answer (assuming it's available on your platform)

Code:
zgrep "Jul 25 22:16:09" file1.*.gz | tail -n 20

More info:

The Power of Z Commands - Zcat, Zless, Zgrep, Zdiff Examples (link removed)
zgrep(1) - Linux man page
 

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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
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