10-15-2009
I'd recommend searching for a good book on basic UNIX commands. It's been so long since I had a UNIX class that I'm sure newer and better ones exist than when I was in school.
Try 'man diff' or Google for something like 'unix compare files'.
For something generic and simple like this, Google's probably a better choice than a forum like this. You'll get a lot more information much faster.
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1. UNIX for Advanced & Expert Users
Hi Guys,
Requirement: Want to compare two files, if the the content of both files is same then show "Good result" else Show "Bad Result"
I am using the following logic
if( cmp -s a b = 0 )
then
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else echo "Bad result"
exit 0
fi
But this is... (1 Reply)
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2. UNIX for Dummies Questions & Answers
Hi,
I need to compare 2 files based on the first field in each file and output the differences to a new file.
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File 1
1252652355
1859553322
1778899562
File 2
1252652355
1859553322
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3. UNIX for Dummies Questions & Answers
how can i unix compare two files??
var1 = 6499 7328 6351 7583 7573
var2 = 6499 7328 6351 7583 7777
i did:
diff $var1 $var2
and i got the output:
1c1
< 6499 7328 6351 7583 7573
---
> 6499 7328 6351 7583 7777
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4. UNIX for Advanced & Expert Users
I have two files which have primary key(s) for each row.
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Primary key(s),file1 value,file2 value.
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script for to take files from FTP server to UNIX server and Unzipped that files (1 Reply)
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Hi Gurus
I need your kind help sorting the below query
I have two text files
File1.txt
ID Name Address
101 Srinath BBB
102 Sidharth CCC
File2.txt
ID Name Address
102 Siddharth DDD
103 Suman EEE
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Hi,
I have two files
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abc
dcf
sdc
File2 Contents:
dcf
sdc
erg
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Good evening
I need your help pease
I know there are 2 commands(diff, or cp) to compare files in a directory. but the question arises:
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Hi All,
Let me know how can i find and delete files from one unix server to another unix server which are 'N' days older.
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I have two files to be compared to get the output of the differences.
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LEARN ABOUT DEBIAN
file::dircompare
DirCompare(3pm) User Contributed Perl Documentation DirCompare(3pm)
NAME
File::DirCompare - Perl module to compare two directories using callbacks.
SYNOPSIS
use File::DirCompare;
# Simple diff -r --brief replacement
use File::Basename;
File::DirCompare->compare($dir1, $dir2, sub {
my ($a, $b) = @_;
if (! $b) {
printf "Only in %s: %s
", dirname($a), basename($a);
} elsif (! $a) {
printf "Only in %s: %s
", dirname($b), basename($b);
} else {
print "Files $a and $b differ
";
}
});
# Version-control like Deleted/Added/Modified listing
my (@listing, @modified); # use closure to collect results
File::DirCompare->compare('old_tree', 'new_tree', sub {
my ($a, $b) = @_;
if (! $b) {
push @listing, "D $a";
} elsif (! $a) {
push @listing, "A $b";
} else {
if (-f $a && -f $b) {
push @listing, "M $b";
push @modified, $b;
} else {
# One file, one directory - treat as delete + add
push @listing, "D $a";
push @listing, "A $b";
}
}
});
DESCRIPTION
File::DirCompare is a perl module to compare two directories using a callback, invoked for all files that are 'different' between the two
directories, and for any files that exist only in one or other directory ('unique' files).
File::DirCompare has a single public compare() method, with the following signature:
File::DirCompare->compare($dir1, $dir2, $sub, $opts);
The first three arguments are required - $dir1 and $dir2 are paths to the two directories to be compared, and $sub is the subroutine
reference called for all unique or different files. $opts is an optional hashref of options - see OPTIONS below.
The provided subroutine is called for all unique files, and for every pair of 'different' files encountered, with the following signature:
$sub->($file1, $file2)
where $file1 and $file2 are the paths to the two files. For 'unique' files i.e. where a file exists in only one directory, the subroutine
is called with the other argument 'undef' i.e. for:
$sub->($file1, undef)
$sub->(undef, $file2)
the first indicates $file1 exists only in the first directory given ($dir1), and the second indicates $file2 exists only in the second
directory given ($dir2).
OPTIONS
The following optional arguments are supported, passed in using a hash reference after the three required arguments to compare() e.g.
File::DirCompare->compare($dir1, $dir2, $sub, {
cmp => $cmp_sub,
ignore_unique => 1,
});
cmp By default, two files are regarded as different if their contents do not match (tested with File::Compare::compare). That default
behaviour can be overridden by providing a 'cmp' subroutine to do the file comparison, returning zero if the two files are equal, and
non-zero if not.
E.g. to compare using modification times instead of file contents:
File::DirCompare->compare($dir1, $dir2, $sub, {
cmp => sub { -M $_[0] <=> -M $_[1] },
});
ignore_cmp
If you want to see all corresponding files, not just 'different' ones, set the 'ignore_cmp' flag to tell File::DirCompare to skip its
file comparison checks i.e.
File::DirCompare->compare($dir1, $dir2, $sub,
{ ignore_cmp => 1 });
ignore_unique
If you want to ignore files that only exist in one of the two directories, set the 'ignore_unique' flag i.e.
File::DirCompare->compare($dir1, $dir2, $sub,
{ ignore_unique => 1 });
SEE ALSO
File::Dircmp, which provides similar functionality (and whose directory walking code I've adapted for this module), but a simpler
reporting-only interface, something like the first example in the SYNOPSIS above.
AUTHOR AND CREDITS
Gavin Carr <gavin@openfusion.com.au>
Thanks to Robin Barker for a bug report and fix for glob problems with whitespace.
COPYRIGHT AND LICENSE
Copyright 2006-2007 by Gavin Carr.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2010-03-02 DirCompare(3pm)