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Top Forums UNIX for Advanced & Expert Users How to find duplicates contents in a files by comparing other files? Post 302678045 by Ygor on Friday 27th of July 2012 06:37:03 AM
Old 07-27-2012
Perhaps try md5sum, e.g...
Code:
md5sum -t files* | awk 'a[$1]{printf "%s and %s are the same\n",a[$1],$2;next}{a[$1]=$2}'

This User Gave Thanks to Ygor For This Post:
 

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MD5SUM(1)							   User Commands							 MD5SUM(1)

NAME
md5sum - compute and check MD5 message digest SYNOPSIS
md5sum [OPTION]... [FILE]... DESCRIPTION
Print or check MD5 (128-bit) checksums. With no FILE, or when FILE is -, read standard input. -b, --binary read in binary mode -c, --check read MD5 sums from the FILEs and check them -t, --text read in text mode (default) The following three options are useful only when verifying checksums: --quiet don't print OK for each successfully verified file --status don't output anything, status code shows success -w, --warn warn about improperly formatted checksum lines --strict with --check, exit non-zero for any invalid input --help display this help and exit --version output version information and exit The sums are computed as described in RFC 1321. When checking, the input should be a former output of this program. The default mode is to print a line with checksum, a character indicating type (`*' for binary, ` ' for text), and name for each FILE. BUGS
The MD5 algorithm should not be used any more for security related purposes. Instead, better use an SHA-2 algorithm, implemented in the programs sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1) AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore. REPORTING BUGS
Report md5sum bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report md5sum translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for md5sum is maintained as a Texinfo manual. If the info and md5sum programs are properly installed at your site, the command info coreutils 'md5sum invocation' should give you access to the complete manual. GNU coreutils 8.12.197-032bb September 2011 MD5SUM(1)
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