Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
To: <cygwin AT cygwin DOT com>
Subject: RE: OT: Using sed - guru help wanted.
Message-ID: <OF38FCE2FD.7A284374-ONC1256DC6.00335ADD@icos.be>
From: erik DOT cumps AT icos DOT be
Date: Tue, 21 Oct 2003 11:36:01 +0200
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

Hi guys,

sorry if this thread was dead but couldn't resist.
Besides, it makes the start of my workday just that
more bearable... :) (regular expressions for fun and
profit eh)

Simply sed:

    sed 's#^ *\(.*[^ ]\) */ *\(.*[^ ]\) *$#.\1.\2.#'

Simply perl:

    perl -pe 's/^\s*(.*\S)\s*\/\s*(.*\S)\s*$/.$1.$2./'

Both will split at the slash and strip leading/trailing spaces
from the parts, even if a part contains just a single non-whitespace
character, even if there is no whitespace to remove.

Simple explanation:

at start of string;
        zero or more spaces;
        string of
                zero or more characters;
                non-space character;
        zero or more spaces;
        slash;
        zero or more spaces;
        string of
                zero or more characters;
                non-space character;
        zero or more spaces;
at end of string.

HTH,
Erik


As it seems my query wasn't that well formed...  i.e. remove any leading
and/or trailing spaces on the parts. Parts separated by the slash.
This seems to do exactly what I'm after;

$ echo 'a b/c d e  ' | \
  sed -re 's- *(.*[^ ]) */ *(.*[^ ]) *$-.\1.\2.-'

Thanks for the input, Brian and Igor.

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/





--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/