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Full Discussion: how to add duplicate lines
Top Forums UNIX for Dummies Questions & Answers how to add duplicate lines Post 302447047 by mikey11415 on Friday 20th of August 2010 05:33:57 PM
Old 08-20-2010
how to add duplicate lines

Hi,
I have a file that looks like this:

a_X data
a_Y data
b data
c data
d_X data
d_Y data

I **want** to duplicate the lines without the _X and _Ys. In other words, I want it to look like this

a_X data
a_Y data
b data
b data
c data
c data
d_X data
d_Y data

I have no idea how to go about this. Another detail (or complication) is that there is a header and a footer that I would prefer not to be duplicated. Is there anyway to restrict this operation to just occur between the a line that says "matrix" and ";end;". This last part is really not necessary, but would be helpful.

I have the feeling that something like sed would be good, but I can't figure it out!

Thanks!

Mikey
 

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URI::data(3)						User Contributed Perl Documentation					      URI::data(3)

NAME
URI::data - URI that contain immediate data SYNOPSIS
use URI; $u = URI->new("data:"); $u->media_type("image/gif"); $u->data(scalar(`cat camel.gif`)); print "$u "; open(XV, "|xv -") and print XV $u->data; DESCRIPTION
The "URI::data" class supports "URI" objects belonging to the data URI scheme. The data URI scheme is specified in RFC 2397. It allows inclusion of small data items as "immediate" data, as if it had been included externally. Examples: data:,Perl%20is%20good data:image/gif;base64,R0lGODdhIAAgAIAAAAAAAPj8+CwAAAAAI AAgAAAClYyPqcu9AJyCjtIKc5w5xP14xgeO2tlY3nWcajmZZdeJcG Kxrmimms1KMTa1Wg8UROx4MNUq1HrycMjHT9b6xKxaFLM6VRKzI+p KS9XtXpcbdun6uWVxJXA8pNPkdkkxhxc21LZHFOgD2KMoQXa2KMWI JtnE2KizVUkYJVZZ1nczBxXlFopZBtoJ2diXGdNUymmJdFMAADs= "URI" objects belonging to the data scheme support the common methods (described in URI) and the following two scheme specific methods: $uri->media_type( [$new_media_type] ) This method can be used to get or set the media type specified in the URI. If no media type is specified, then the default "text/plain;charset=US-ASCII" is returned. $uri->data( [$new_data] ) This method can be used to get or set the data contained in the URI. The data is passed unescaped (in binary form). The decision about whether to base64 encode the data in the URI is taken automatically based on what encoding produces the shortest URI string. SEE ALSO
URI COPYRIGHT
Copyright 1995-1998 Gisle Aas. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.8.0 1999-03-20 URI::data(3)
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