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Full Discussion: Simple newbie grep question
Top Forums UNIX for Dummies Questions & Answers Simple newbie grep question Post 302182156 by doubleminus on Saturday 5th of April 2008 03:43:52 PM
Old 04-05-2008
Thank you!

Second question: Is there way to insert math into a grep, for example:

In a large chat log file I want to grep for every instance of an abbreviation of an ordinal number: 21st, 31st, 41st, 101st, 401st, 2nd, 22nd, 32nd etc.

So I would want to do egrep [x+10]st|y+10]nd|[z+10]rd] chatlog.txt or something like that. Is there any way to have the shell evaluate this math and append 'st' 'nd' 'rd' as necessary? Thanks!

Last edited by doubleminus; 04-05-2008 at 05:11 PM..
 

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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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