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Top Forums UNIX for Dummies Questions & Answers removing duplicates of a pattern from a file Post 302232187 by era on Thursday 4th of September 2008 03:18:23 AM
Old 09-04-2008
Code:
perl -pe 'BEGIN { $i = 1 } ++$i while (s/PATTERN/NONESVCH_$i/); s/NONESVCH/PATTERN/g' file

The indexing will be zero-based if you take out the BEGIN part.
 

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GREPJAR(1)								GNU								GREPJAR(1)

NAME
grepjar - search files in a jar file for a pattern SYNOPSIS
grepjar [-bcinsw] -e PATTERN | PATTERN files... DESCRIPTION
The "grepjar" program can be used to search files in a jar file for a pattern. OPTIONS
-b Print byte offset of match. -c Print number of matches. -i Compare case-insensitively. -n Print line number of each match. -s Suppress error messages. -w Force PATTERN to match only whole words. -e PATTERN Use PATTERN as regular expression. --help Print help, then exit. -V --version Print version number, then exit. SEE ALSO
jar(1), gcj(1), gij(1), gfdl(7) and the Info entry for gcj. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with the Invariant Sections being ``GNU General Public License'', the Front- Cover texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the man page gfdl(7). gcc-3.2.2 2003-02-25 GREPJAR(1)
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