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Full Discussion: Removing carriage return/line feeds on multiple lines
Top Forums Shell Programming and Scripting Removing carriage return/line feeds on multiple lines Post 302667447 by tomr2012 on Friday 6th of July 2012 10:05:45 AM
Old 07-06-2012
Removing carriage return/line feeds on multiple lines
I would like to remove carriage returns/line feeds in a text file, but in a specific cadence:
  • Read first line (Header Line 1), remove cr/lf at the end (replace it with a space ideally);
  • Read the next line (Line of Text 2), leave the cr/lf intact;
  • Read the next line, remove the cr/lf;
  • Read the next line (Header Line 2), remove cr/lf at the end (replace it with a space);
  • Read the next line (Line of Text 2), leave the cr/lf intact…

Here is my input data, in red of the cr/lf I would like deleted

Code:
Header Line 1 <cr/lf> ( replace with a space)
Line of Text 1<cr/lf>
<cr/lf> 
Header Line 2 <cr/lf> (replace with a space)
Line of Text 2<cr/lf>
<cr/lf>

What I would like to output

Header Line 1 Line of Text 1
Header Line 2 Line of Text 2

Being new to sed, I have managed to remove all the cr/lf’s but I just end up with a long string of text. I would live to preserve the cr/lfs that separate Header Line 1 Line of Text 1 from Header Line 2 Line of Text 2.

Thanks for your help!
Last edited by Scrutinizer; 07-06-2012 at 11:17 AM.. Reason: code tags
 

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LEARN ABOUT CENTOS

perl::critic::policy::valuesandexpressions::prohibitimplicitnewl

Perl::Critic::Policy::ValuesAndExpressions::ProhibitImplUserNContributed PePerl::Critic::Policy::ValuesAndExpressions::ProhibitImplicitNewlines(3)

NAME

       Perl::Critic::Policy::ValuesAndExpressions::ProhibitImplicitNewlines - Use concatenation or HEREDOCs instead of literal line breaks in
       strings.

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Strings with embedded line breaks are hard to read.  Use concatenation or HEREDOCs instead.

	   my $foo = "Line one is quite long
	   Line two";					 # Bad

	   my $foo = "Line one is quite long
Line two"; # Better, but still hard to read

	   my $foo = "Line one is quite long
"
	       . "Line two";				   # Better still

	   my $foo = <<'EOF';				 # Use heredoc for longer passages
	   Line one is quite long
	   Line two
	   Line three breaks the camel's back
	   EOF

CONFIGURATION

       This Policy is not configurable except for the standard options.

AUTHOR

       Chris Dolan <cdolan@cpan.org>

CREDITS

       Initial development of this policy was supported by a grant from the Perl Foundation.

COPYRIGHT

       Copyright (c) 2007-2011 Chris Dolan.  Many rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The full text of this license
       can be found in the LICENSE file included with this module.

perl v5.16.3							    2014-06Perl::Critic::Policy::ValuesAndExpressions::ProhibitImplicitNewlines(3)
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