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UNIX for Advanced & Expert Users
Script to parse and compare information in two fields of file
Post 302953445 by GERMANOS on Friday 28th of August 2015 07:01:43 AM
08-28-2015
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LEARN ABOUT LINUX
comm
COMM(1) User Commands COMM(1) NAME
comm - compare two sorted files line by line SYNOPSIS
comm [OPTION]... FILE1 FILE2 DESCRIPTION
Compare sorted files FILE1 and FILE2 line by line. With no options, produce three-column output. Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and column three contains lines common to both files. -1 suppress column 1 (lines unique to FILE1) -2 suppress column 2 (lines unique to FILE2) -3 suppress column 3 (lines that appear in both files) --check-order check that the input is correctly sorted, even if all input lines are pairable --nocheck-order do not check that the input is correctly sorted --output-delimiter=STR separate columns with STR --help display this help and exit --version output version information and exit Note, comparisons honor the rules specified by `LC_COLLATE'. EXAMPLES
comm -12 file1 file2 Print only lines present in both file1 and file2. comm -3 file1 file2 Print lines in file1 not in file2, and vice versa. AUTHOR
Written by Richard M. Stallman and David MacKenzie. REPORTING BUGS
Report comm 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 comm translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2010 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
join(1), uniq(1) The full documentation for comm is maintained as a Texinfo manual. If the info and comm programs are properly installed at your site, the command info coreutils 'comm invocation' should give you access to the complete manual. GNU coreutils 8.5 February 2011 COMM(1)