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Top Forums Shell Programming and Scripting Changing particular field in fixed width file Post 302166177 by quintet on Monday 11th of February 2008 07:29:09 AM
Old 02-11-2008
sed '4,6 s/\(.\{35\}\)./\1G/' temp.txt>sample.txt

This will modify the 36th character from line number 4-6 (u can modify it for 20 lines)

hope this helps
 

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Date::Calc::PP(3)					User Contributed Perl Documentation					 Date::Calc::PP(3)

NAME
Date::Calc::PP - pure-Perl plug-in for Date::Calc SYNOPSIS
You never use this module directly. Use Date::Calc(3) instead! DESCRIPTION
You never use this module directly. Use Date::Calc(3) instead! SEE ALSO
Date::Calc(3), Date::Calc::XS(3). VERSION
This man page documents "Date::Calc::PP" version 6.3. AUTHOR
Steffen Beyer mailto:STBEY@cpan.org http://www.engelschall.com/u/sb/download/ COPYRIGHT
Copyright (c) 1995 - 2009 by Steffen Beyer. All rights reserved. LICENSE
This package is free software; you can use, modify and redistribute it under the same terms as Perl itself, i.e., at your option, under the terms either of the "Artistic License" or the "GNU General Public License". The C library at the core of the module "Date::Calc::XS" can, at your discretion, also be used, modified and redistributed under the terms of the "GNU Library General Public License". Please refer to the files "Artistic.txt", "GNU_GPL.txt" and "GNU_LGPL.txt" in the "license" subdirectory of this distribution for any details! DISCLAIMER
This package is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the "GNU General Public License" for more details. perl v5.12.1 2009-10-31 Date::Calc::PP(3)
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