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Top Forums Shell Programming and Scripting Compare two files and get only missing names Post 302865201 by Selva_2507 on Thursday 17th of October 2013 11:51:33 PM
Old 10-18-2013
Linux Compare two files and get only missing names

I need to compare two files (oldfile1 & newfile). Need to ignore the values which are present in both files. At the same time, i need to get only records in new file.

Tried using Join -v1 -v2 oldfile1 newfile (suspect it has not worked as expected).

could anyone of you please help me here.
 

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CMP(1)								   User Commands							    CMP(1)

NAME
cmp - compare two files byte by byte SYNOPSIS
cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]] DESCRIPTION
Compare two files byte by byte. -b --print-bytes Print differing bytes. -i SKIP --ignore-initial=SKIP Skip the first SKIP bytes of input. -i SKIP1:SKIP2 --ignore-initial=SKIP1:SKIP2 Skip the first SKIP1 bytes of FILE1 and the first SKIP2 bytes of FILE2. -l --verbose Output byte numbers and values of all differing bytes. -n LIMIT --bytes=LIMIT Compare at most LIMIT bytes. -s --quiet --silent Output nothing; yield exit status only. -v --version Output version info. --help Output this help. SKIP1 and SKIP2 are the number of bytes to skip in each file. SKIP values may be followed by the following multiplicative suffixes: kB 1000, K 1024, MB 1,000,000, M 1,048,576, GB 1,000,000,000, G 1,073,741,824, and so on for T, P, E, Z, Y. If a FILE is `-' or missing, read standard input. AUTHOR
Written by Torbjorn Granlund and David MacKenzie. REPORTING BUGS
Report bugs to <bug-gnu-utils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This program comes with NO WARRANTY, to the extent permitted by law. You may redistribute copies of this program under the terms of the GNU General Public License. For more information about these matters, see the file named COPYING. SEE ALSO
The full documentation for cmp is maintained as a Texinfo manual. If the info and cmp programs are properly installed at your site, the command info diff should give you access to the complete manual. diffutils 2.8.1 April 2002 CMP(1)
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