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Full Discussion: Help with sed substitution
Top Forums UNIX for Dummies Questions & Answers Help with sed substitution Post 302379729 by stabby on Friday 11th of December 2009 07:01:22 PM
Old 12-11-2009
Help with sed substitution
I'm a noob to unix, and I have a line of data like the following:
title=Boston|tcolor=green|desc=Large city in New England|url=www.boston.com

Is there a way to change a field value with sed substitution?
(i.e. change tcolor=green to tcolor=blue)

I figured out: sed 's/tcolor=.*|/tcolor=blue|/'

...but because of the whole greedy thing, it replaces everything from tcolor= up until the last "|"


For a bit of context, the entire script gets passed values for $title, $tcolor, $desc, and $url... if $title matches a data item that already has that title, than I have to update its other fields to the new values.

I hope that all makes sense.... i appreciate any hints you can give me! :-)
 

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LEARN ABOUT DEBIAN

perlanet::trait::yamlconfig

Perlanet::Trait::YAMLConfig(3pm)			User Contributed Perl Documentation			  Perlanet::Trait::YAMLConfig(3pm)

NAME

       Perlanet::Trait::YAMLConfig - configure Perlanet through a YAML configuration file

SYNOPSIS

	  package MyPerlanet;
	  extends 'Perlanet';
	  with 'Perlanet::Traits::YAMLConfig';

	  my $perlanet = MyPerlanet->new_with_config(
	    configfile => 'whatever.yml'
	  );

	  $perlanet->run;

DESCRIPTION

       Allows you to move the configuration of Perlanet to an external YAML configuration file.

   Example Configuration File
	 title: planet test
	 description: A Test Planet
	 url: http://planet.example.com/
	 author:
	   name: Dave Cross
	   email: dave@dave.org.uk
	 entries: 20
	 opml: opml.xml
	 page:
	   file: index.html
	   template: index.tt
	 feed:
	   file: atom.xml
	   format: Atom
	 cache_dir: /tmp/feeds
	 feeds:
	   - url: http://blog.dave.org.uk/atom.xml
	     title: Dave's Blog
	     web: http://blog.dave.org.uk/
	   - url: http://use.perl.org/~davorg/journal/rss
	     title: Dave's use.perl Journal
	     web: http://use.perl.org/~davorg/journal/
	   - url: http://www.oreillynet.com/pub/feed/31?au=2607
	     title: Dave on O'Reillynet
	     web: http://www.oreillynet.com/pub/au/2607

METHODS

   THIRTY_DAYS
       The default length of caching, if caching options are present in the configuration

   get_config_from_file
       Extracts the configuration from a YAML file

AUTHOR

       Oliver Charles, <oliver.g.charles@googlemail.com>

COPYRIGHT AND LICENSE

       Copyright (c) 2010 by Magnum Solutions Ltd.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.0 or,
       at your option, any later version of Perl 5 you may have available.

perl v5.14.2							    2012-03-17					  Perlanet::Trait::YAMLConfig(3pm)
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