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Top Forums Shell Programming and Scripting comparing 2 files and creating third file with uncommon content Post 302598323 by birei on Tuesday 14th of February 2012 05:13:04 AM
Old 02-14-2012
Try:
Code:
$ cat file1
ajay suhas tom nisha vijay mahish
ajay suhas tom nisha vijay mahish
ajay suhas tom nisha vijay mahish
ajay suhas tom nisha vijay mahish
$ cat file2
ajay suhas tom nisha
ajay suhas tom
tom
tom nisha
$ cat script.pl
use warnings;
no strict qw(refs);

die qq[Usage: perl $0 <file1> <file2>\n] unless @ARGV == 2;

open my $fh1, qq[<], shift or die qq[Cannot open input file: $!\n];
open my $fh2, qq[<], shift or die qq[Cannot open input file: $!\n];

while ( my $l1 = <$fh1>, my $l2 = <$fh2> ) {
        chomp( $l1, $l2 );
        my %h1 = map { $_ => 1 } split /\s+/, $l1;
        delete @h1{ split( /\s+/, $l2 ) };
        printf qq[%s\n], join qq[ ], keys %h1;
}
$ perl script.pl file1 file2
vijay mahish
vijay mahish nisha
suhas vijay mahish nisha ajay
suhas vijay mahish ajay

Regards,
Birei
 

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NOTEDB::dumper(3pm)					User Contributed Perl Documentation				       NOTEDB::dumper(3pm)

NAME
NOTEDB::text - module lib for accessing a notedb from perl SYNOPSIS
# include the module use NOTEDB; # create a new NOTEDB object $db = new NOTEDB("text", "/home/tom/.notedb", 4096, 24); # decide to use encryption # $key is the cipher to use for encryption # $method must be either Crypt::IDEA or Crypt::DES # you need Crypt::CBC, Crypt::IDEA and Crypt::DES to have installed. $db->use_crypt($key,$method); # do not use encryption # this is the default $db->no_crypt; # get a single note ($note, $date) = $db->get_single(1); # search for a certain note %matching_notes = $db->get_search("somewhat"); # format of returned hash: #$matching_notes{$numberofnote}->{'note' => 'something', 'date' => '23.12.2000 10:33:02'} # get all existing notes %all_notes = $db->get_all(); # format of returnes hash like the one from get_search above # get the next noteid available $next_num = $db->get_nextnum(); # modify a certain note $db->set_edit(1, "any text", "23.12.2000 10:33:02"); # create a new note $db->set_new(5, "any new text", "23.12.2000 10:33:02"); # delete a certain note $db->set_del(5); # turn on encryption. CryptMethod must be IDEA, DES or BLOWFISH $db->use_crypt("passphrase", "CryptMethod"); # turn off encryption. This is the default. $db->no_crypt(); DESCRIPTION
You can use this module for accessing a note database. This backend uses a text file for storage and Storable for accessing the file. Currently, NOTEDB module is only used by note itself. But feel free to use it within your own project! Perhaps someone want to implement a webinterface to note... USAGE
please see the section SYNOPSIS, it says it all. AUTHOR
Thomas Linden <tom@daemon.de>. perl v5.10.1 2009-07-19 NOTEDB::dumper(3pm)
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