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Full Discussion: regular expression help
Top Forums UNIX for Dummies Questions & Answers regular expression help Post 302581060 by balajesuri on Monday 12th of December 2011 01:48:11 AM
Old 12-12-2011
@drew211: I'm not sure what \..\ {3\}$ will match. Please provide a sample input and required output. That should ease things out for other members.

If you're looking to match a dot followed by any 3 characters at the end of an entry, try the following:
Code:
perl -ne '/\.[\d\D]{3}$/ && print $_' inputfile.txt

You can use the same regex with grep if your OS supports -p (--perl-regexp) switch.
 

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MAILDIR-FILTER(1)					      General Commands Manual						 MAILDIR-FILTER(1)

NAME
maildir-filter - program to filter mail in Maildir folders. SYNOPSIS
maildir-filter -r <regexp> [-d ./Maildir/.folder | -b] [-D] [-p] [-i] [-V] [-n] [-H] DESCRIPTION
maildir-filter is used to filter messages in Maildir folders. It reads the message from stdin and used qmail's exit conde conventions, so it can work from your .qmail file. It can be used to bounce, deliver or just send messages do /dev/null. OPTIONS
The programs follow the usual GNU command line syntax. A summary of options are included below. -r <regexp> Use this regexp to match the message. It follows perl syntax. -D turn on a few debug messages -b bounce if matches -p print messa to stdout -i case insensitive match -V print version and exit -n negate regexp (!~ m// in perl talk) -H only try to match the headers -k kill the message SEE ALSO
dot-qmail(5) AUTHOR
This manual page was written by Marcelo Bezerra <mosca@mosca.yi.org>. MAILDIR-FILTER(1)
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