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Full Discussion: Script for identifying and deleting dupes in a line
Top Forums Shell Programming and Scripting Script for identifying and deleting dupes in a line Post 302608282 by ardibehest on Friday 16th of March 2012 07:09:30 PM
Old 03-16-2012
Hello,
I wonder if it would be possible to add to Gimley's program. I had written a perl script to identify duplicates in a large file which has a structure similar to Gimley's.
Quote:
word=word1,word2,word3
where Word is the headword and word1, word2, word3 are all equivalents of the word.
It so happens that some times two entries for the same headword can be present.
Quote:
word=word1,word2,word3
word=word1,word4,word5
I have written a program in PERL which identifies such dupes and spews them out in a file where singletons and dupes are clearly identified.
However I have not been able to add to it the added functionality of merging the duplicates into one single entry.
Thus the dupes mentioned above should merge to one single entry:
Quote:
word=word1,word2,word3,word4,word5
Any help given would be greatly appreciated.

Code:
#!/usr/bin/perl

$dupes = $singletons = "";		# This goes at the head of the file

do {
    $dupefound = 0;			# These go at the head of the loop
    $text = $line = $prevline = $name = $prevname = "";
    do {
	$line = <>;
	$line =~ /^(.+)\=.+$/ and $name = $1;
	$prevline =~ /^(.+)\=.+$/ and $prevname = $1;
	if ($name eq $prevname) { $dupefound += 1 }
	$text .= $line;
	$prevline = $line;
    } until ($dupefound > 0 and $text !~ /^(.+?)\=.*?\n(?:\1=.*?\n)+\z/m) or eof;
    if ($text =~ s/(^(.+?)\=.*?\n(?:\2=.*?\n)+)//m) { $dupes .= $1 }
    $singletons .= $text;
} until eof;
print "SINGLETONS\n$singletons\n\DUPES\n$dupes";

 

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LEARN ABOUT DEBIAN

emgrip-dupes

EMGRIP-DUPES(1) 					User Contributed Perl Documentation					   EMGRIP-DUPES(1)

NAME

       emgrip-dupes - find packages listed in more than one component

Synopsis
	Syntax: emgrip-dupes -b PATH [OPTIONS]
		emgrip-dupes -b PATH -m|--merge NAME [OPTIONS]
		emgrip-dupes -b PATH -p|--purge NAME [OPTIONS]
		emgrip-dupes -?|-h|--help|--version

	Commands:
	-b|--base-path PATH:	       path to the top level grip directory [required]
	-a|--arch ARCHITECTURE:        architecture to test [default: i386]
	-m|--merge NAMES:	       retain this duplicate at the latest version in all
	-p|--purge NAMES:	       remove the duplicates from 'main'
	-t|--trim NAMES:	       retain the duplicates in main only
	-?|-h|--help|--version:        print this help message and exit

       Options:
	   --grip-name STRING:	       alternative name for the grip repository
	-s|--suite SUITE:	       suite to check (default: unstable)
	-n|--dry-run:		       print the reprepro commands that would be used.

Description
       emgrip-dupes scans the Grip repository Packages data and configuration, identifies the supported list of components in the requested suite.

       In some cases, these duplicates are useful and only a small amount of space is taken up by the extra listing. However, the version in one
       component can easily be out of sync with the version in another.

       The main emphasis is on the size of the Packages file for the 'main' component (the one that every user needs to download). Purge mode will
       remove the listing of the specified package from 'main'. Merge mode will bring the outdated version into line with the most recent version
       of the package so that all components list the most recent version.

Limitations
       Next step is to automate the "correction" of the duplicates but this does need care. Manual corrections involve identifying the packages to
       retain in main (where the duplicate in dev, doc or debug is not wanted) and pass those to --trim.

       The more complex case is to remove from main (e.g. package name suffix is -dev or -doc or -dbg or the Section is devel, dbg, doc or
       libdevel).  emgrip-dupes --purge removes each binary separately because removing the package from main in a single operation will also
       remove the source.  This is a particular problem if the source package also builds binary packages that are intended for main, e.g. dbus.

Copyright and Licence
	Copyright (C) 2009  Neil Williams <codehelp@debian.org>

	This package is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.

perl v5.12.3							    2011-03-27							   EMGRIP-DUPES(1)
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