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Top Forums Shell Programming and Scripting Awk multiple lines with 4th column on to a single line Post 302560865 by durden_tyler on Sunday 2nd of October 2011 01:14:56 AM
Old 10-02-2011
Using Perl:

Code:
$
$
$ cat f10
XXXXXXXXXX1|07/24/2007|1|aaaaaaaaaaabbbbbbbbccccccccccccc
XXXXXXXXXX1|07/26/2007|2|sometxt
XXXXXXXXXX1|07/30/2007|1|some_random_text
XXXXXXXXXX1|08/31/2007|2|new_random.
XXXXXXXXXX1|09/27/2007|3|some_nre_random_test
$
$
$ perl -F"\|" -lane 'if ($F[2] == 1){print $x; $x="$F[0]|$F[1]|$F[3]"} else {$x.=$F[3]} END {print $x}' f10

XXXXXXXXXX1|07/24/2007|aaaaaaaaaaabbbbbbbbcccccccccccccsometxt
XXXXXXXXXX1|07/30/2007|some_random_textnew_random.some_nre_random_test
$
$
$

tyler_durden
 

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Heap::Elem::StrRev(3pm) 				User Contributed Perl Documentation				   Heap::Elem::StrRev(3pm)

NAME
Heap::Elem::StrRev - Reversed String Heap Elements SYNOPSIS
use Heap::Elem::StrRev( StrRElem ); use Heap::Fibonacci; my $heap = Heap::Fibonacci->new; my $elem; foreach $i ( 'aa'..'bz' ) { $elem = StrRElem( $i ); $heap->add( $elem ); } while( defined( $elem = $heap->extract_top ) ) { print "Largest is ", $elem->val, " "; } DESCRIPTION
Heap::Elem::StrRev is used to wrap string values into an element that can be managed on a heap. The top of the heap will have the largest element still remaining. (See Heap::Elem::Str if you want the heap to always return the smallest element.) The details of the Elem interface are described in Heap::Elem. The details of using a Heap interface are described in Heap. AUTHOR
John Macdonald, john@perlwolf.com COPYRIGHT
Copyright 1998-2007, O'Reilly & Associates. This code is distributed under the same copyright terms as perl itself. SEE ALSO
Heap(3), Heap::Elem(3), Heap::Elem::Str(3). perl v5.8.8 2007-10-23 Heap::Elem::StrRev(3pm)
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