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Full Discussion: whitespace problem
Top Forums UNIX for Advanced & Expert Users whitespace problem Post 302289784 by zedex on Friday 20th of February 2009 12:08:17 PM
Old 02-20-2009
Quote:
Originally Posted by RubinPat
I think I interpreted my problem wrongly.

this white space is in a column middle of the file>
columna columnb columnc columnd
tom rom[whitespace] pom som
tok ghom poch[whitespace] zom

so i need to remove the whitespace from column b and columnc only and that too everytime at the end of the string.

Is there any way. Sorry abt that.

Thanks,
rubinpat

if columns are not separated by space then what is the separator ? if possible provide some actual data ..
 

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Regexp::Common::whitespace(3)				User Contributed Perl Documentation			     Regexp::Common::whitespace(3)

NAME
Regexp::Common::whitespace -- provides a regex for leading or trailing whitescape SYNOPSIS
use Regexp::Common qw /whitespace/; while (<>) { s/$RE{ws}{crop}//g; # Delete surrounding whitespace } DESCRIPTION
Please consult the manual of Regexp::Common for a general description of the works of this interface. Do not use this module directly, but load it via Regexp::Common. $RE{ws}{crop} Returns a pattern that identifies leading or trailing whitespace. For example: $str =~ s/$RE{ws}{crop}//g; # Delete surrounding whitespace The call: $RE{ws}{crop}->subs($str); is optimized (but probably still slower than doing the s///g explicitly). This pattern does not capture under "-keep". SEE ALSO
Regexp::Common for a general description of how to use this interface. AUTHOR
Damian Conway (damian@conway.org) MAINTAINANCE
This package is maintained by Abigail (regexp-common@abigail.be). BUGS AND IRRITATIONS
Bound to be plenty. For a start, there are many common regexes missing. Send them in to regexp-common@abigail.be. LICENSE and COPYRIGHT This software is Copyright (c) 2001 - 2009, Damian Conway and Abigail. This module is free software, and maybe used under any of the following licenses: 1) The Perl Artistic License. See the file COPYRIGHT.AL. 2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2. 3) The BSD Licence. See the file COPYRIGHT.BSD. 4) The MIT Licence. See the file COPYRIGHT.MIT. perl v5.18.2 2013-03-08 Regexp::Common::whitespace(3)
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