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Top Forums Shell Programming and Scripting Find common lines with one file and with all of the files in another folder Post 303013607 by Eve on Saturday 24th of February 2018 08:52:47 AM
Old 02-24-2018
Find common lines with one file and with all of the files in another folder

Hi! I would like to
Code:
comm -12

with one file and with all of the files in another folder that has a 100 files or more (that file is not in that folder) to find common text lines. I would like to have each case that they have common lines to be written to a different output file and the names of the output files shoud be the two file names together that had common lines united by a dash sign - for instance
filetobecompared-filethathadacommonline

Sincerely grateful if anyone can help!
I don't have a python, could it be done with awk or anything else that works?

Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 02-24-2018 at 10:45 AM.. Reason: Added CODE tags.
 

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COMM(1) 						    BSD General Commands Manual 						   COMM(1)

NAME
comm -- select or reject lines common to two files SYNOPSIS
comm [-123i] file1 file2 DESCRIPTION
The comm utility reads file1 and file2, which should be sorted lexically, and produces three text columns as output: lines only in file1; lines only in file2; and lines in both files. The filename ``-'' means the standard input. The following options are available: -1 Suppress printing of column 1. -2 Suppress printing of column 2. -3 Suppress printing of column 3. -i Case insensitive comparison of lines. Each column will have a number of tab characters prepended to it equal to the number of lower numbered columns that are being printed. For example, if column number two is being suppressed, lines printed in column number one will not have any tabs preceding them, and lines printed in column number three will have one. The comm utility assumes that the files are lexically sorted; all characters participate in line comparisons. ENVIRONMENT
The LANG, LC_ALL, LC_COLLATE, and LC_CTYPE environment variables affect the execution of comm as described in environ(7). EXIT STATUS
The comm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
cmp(1), diff(1), sort(1), uniq(1) STANDARDS
The comm utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). The -i option is an extension to the POSIX standard. HISTORY
A comm command appeared in Version 4 AT&T UNIX. BUGS
Input lines are limited to LINE_MAX (2048) characters in length. BSD
January 26, 2005 BSD
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