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Full Discussion: comparing 2 files and creating third file with uncommon content
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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LEARN ABOUT CENTOS

lzdiff

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and  xzdiff  invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), bzip2(1), or lzop(1).  All options specified
       are passed directly to cmp(1) or diff(1).  If only one file is specified, then the files compared are file1 (which must have a suffix of  a
       supported  compression format) and file1 from which the compression format suffix has been stripped.  If two files are specified, then they
       are uncompressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp(1) or diff(1) is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), lzop(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2011-03-19								 XZDIFF(1)
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