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Full Discussion: regex question using egrep
Top Forums Shell Programming and Scripting regex question using egrep Post 302539664 by Skrynesaver on Monday 18th of July 2011 10:43:05 AM
Old 07-18-2011
Considering your spec you should be aware that:
Code:
~/$ echo abc-123| egrep '[a-z]{3}-[0-9]{1,2}'
abc-123

Wheras
Code:
~/$ echo abc-123| egrep '^[a-z]{3}-[0-9]{1,2}$'
~/$

And which grep are you running?
Code:
~/$ egrep --version
egrep (GNU grep) 2.5.1

 

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LEARN ABOUT NETBSD

zfgrep

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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