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Top Forums Shell Programming and Scripting grep or sed. How to remove certain characters Post 302438719 by Sucio on Tuesday 20th of July 2010 01:37:34 PM
Old 07-20-2010
grep or sed. How to remove certain characters

Here is my problem.

I have a list of phone numbers that I want to use only the last 4 digits as PINs for something I am working on. I have all the numbers in a file but now I want to be removed all items EXCEPT the last 4 digits.

I have seen sed commands and some grep commands but I am having some trouble.

Here is what I want to do.

file(before edit)

Code:
718-555-5465
(718) 555-1234
718-555-5678

file(after edit)
Code:
5465
1234
5678

thanks a lot guys.

Last edited by radoulov; 07-20-2010 at 02:39 PM.. Reason: Code tags, please!
 

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Template::Namespace::Constants(3)			User Contributed Perl Documentation			 Template::Namespace::Constants(3)

NAME
Template::Namespace::Constants - Compile time constant folding SYNOPSIS
# easy way to define constants use Template; my $tt = Template->new({ CONSTANTS => { pi => 3.14, e => 2.718, }, }); # nitty-gritty, hands-dirty way use Template::Namespace::Constants; my $tt = Template->new({ NAMESPACE => { constants => Template::Namespace::Constants->new({ pi => 3.14, e => 2.718, }, }, }); DESCRIPTION
The "Template::Namespace::Constants" module implements a namespace handler which is plugged into the "Template::Directive" compiler module. This then performs compile time constant folding of variables in a particular namespace. METHODS
new(\%constants) The new() constructor method creates and returns a reference to a new Template::Namespace::Constants object. This creates an internal stash to store the constant variable definitions passed as arguments. my $handler = Template::Namespace::Constants->new({ pi => 3.14, e => 2.718, }); ident(@ident) Method called to resolve a variable identifier into a compiled form. In this case, the method fetches the corresponding constant value from its internal stash and returns it. AUTHOR
Andy Wardley <abw@wardley.org> <http://wardley.org/> COPYRIGHT
Copyright (C) 1996-2007 Andy Wardley. All Rights Reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
Template::Directive perl v5.16.3 2011-12-20 Template::Namespace::Constants(3)
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