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Top Forums Shell Programming and Scripting sed command not getting the right output Post 302964314 by jozo95 on Wednesday 13th of January 2016 11:14:08 AM
Old 01-13-2016
Quote:
Originally Posted by RudiC
Code:
sed 
        -n      switch off default print
        E       sw. on extended regexes
        's      substitute command
        /^      start of line
        [^-<>]* any sequence of non "-", non "<", non ">" chars   
        |       alternate regex separator ("OR" regexes)
        [^:]*   seq of non ":" chars
        [:-<>]* any combination of "-><:" chars
        [^:]*$  seq of non ":", EOL  
        //      empty replacement string
        g       global flag (substitute ALL occurrences)
        p       print if substitution took place
' file

I love you sir. I have a question on the " [^-<>]* ", the "^" here is the same as "!" (dont)? And why is the g flag needed ?
 

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

NAME
Regexp::Common::lingua -- provide regexes for language related stuff. SYNOPSIS
use Regexp::Common qw /lingua/; while (<>) { /^$RE{lingua}{palindrome}$/ and print "is a palindrome "; } 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{lingua}{palindrome} Returns a pattern that recognizes a palindrome, a string that is the same if you reverse it. By default, it only matches strings consisting of letters, but this can be changed using the "{-chars}" option. This option takes a character class (default is "[A-Za-z]") as argument. If "{-keep}" is used, only $1 will be set, and set to the entire match. This pattern requires at least perl 5.6.0. 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
Many regexes are 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::lingua(3)
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