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Full Discussion: Sort content of text file based on date?
Top Forums Shell Programming and Scripting Sort content of text file based on date? Post 302493280 by radoulov on Wednesday 2nd of February 2011 09:48:56 AM
Old 02-02-2011
Could you post the exact command that you executed (just copy/paste from your terminal)?

This is what I run:

Code:
zsh-4.3.11[t]% cat infile 
16 jan 2008 22:18

Text 1 from forum post Text 1 from forum post Text 1 from forum post

--------------------------------------------------------

26 jul 2005 18:33

Text 2 from forum post Text 2 from forum post Text 2 from forum post

--------------------------------------------------------

26 jul 2006 18:46

Text 3 from forum post Text 3 from forum post Text 3 from forum post

--------------------------------------------------------

26 jul 2003 18:54

Text 4 from forum post Text 4 from forum post Text 4 from forum post

--------------------------------------------------------

zsh-4.3.11[t]% perl -ne'BEGIN {
  @m{
    qw[ jan feb mar apr may jun jul aug sep oct nov dec ]
} = 0 .. 11;
  }
  do {
    @d = split/[\s:]/;
    $d = join "", $d[2], $m{$d[1]}, $d[0], $d[3], $d[4];
    } if /^\d{2} \w{3} \d{4} \d{2}:/;
  do {
    push @r, [$d, $r];
undef $r;
next;
} if /^---/;
  $r .= $_;
  END {
    print map{
  $_->[1] . ("-") x 50 . $/
  } sort {
    $a->[0] <=> $b->[0]
} @r;
   }' infile

26 jul 2003 18:54

Text 4 from forum post Text 4 from forum post Text 4 from forum post

--------------------------------------------------

26 jul 2005 18:33

Text 2 from forum post Text 2 from forum post Text 2 from forum post

--------------------------------------------------

26 jul 2006 18:46

Text 3 from forum post Text 3 from forum post Text 3 from forum post

--------------------------------------------------
16 jan 2008 22:18

Text 1 from forum post Text 1 from forum post Text 1 from forum post

--------------------------------------------------

Last edited by radoulov; 02-02-2011 at 11:17 AM..
 

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LEARN ABOUT SUSE

text::tabs

Text::Tabs(3pm) 					 Perl Programmers Reference Guide					   Text::Tabs(3pm)

NAME

       Text::Tabs -- expand and unexpand tabs per the unix expand(1) and unexpand(1)

SYNOPSIS

	 use Text::Tabs;

	 $tabstop = 4;	# default = 8
	 @lines_without_tabs = expand(@lines_with_tabs);
	 @lines_with_tabs = unexpand(@lines_without_tabs);

DESCRIPTION

       Text::Tabs does about what the unix utilities expand(1) and unexpand(1) do.  Given a line with tabs in it, expand will replace the tabs
       with the appropriate number of spaces.  Given a line with or without tabs in it, unexpand will add tabs when it can save bytes by doing so
       (just like "unexpand -a").  Invisible compression with plain ASCII!

EXAMPLE

	 #!perl
	 # unexpand -a
	 use Text::Tabs;

	 while (<>) {
	   print unexpand $_;
	 }

       Instead of the "expand" comand, use:

	 perl -MText::Tabs -n -e 'print expand $_'

       Instead of the "unexpand -a" command, use:

	 perl -MText::Tabs -n -e 'print unexpand $_'

LICENSE

       Copyright (C) 1996-2002,2005,2006 David Muir Sharnoff.  Copyright (C) 2005 Aristotle Pagaltzis This module may be modified, used, copied,
       and redistributed at your own risk.  Publicly redistributed modified versions must use a different name.

perl v5.12.1							    2010-04-26							   Text::Tabs(3pm)
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