MirBSD manpage: comm(1)

COMM(1)                      BSD Reference Manual                      COMM(1)


     comm - select or reject lines common to two files


     comm [-123f] file1 file2


     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 options are as follows:

     -1      Suppress printing of column 1.

     -2      Suppress printing of column 2.

     -3      Suppress printing of column 3.

     -f      Fold case in line comparisons.

     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.

     comm assumes that the files are lexically sorted; all characters partici-
     pate in line comparisons.

     The comm utility exits 0 on success or >0 if an error occurred.


     cmp(1), diff(1), sort(1), uniq(1)


     The comm utility conforms to IEEE Std 1003.2-1992 ("POSIX.2").


     A comm command appeared in Version 4 AT&T UNIX.

MirBSD #10-current               June 6, 1993                                1

Generated on 2022-12-24 01:00:14 by $MirOS: src/scripts/roff2htm,v 1.113 2022/12/21 23:14:31 tg Exp $ — This product includes material provided by mirabilos.

These manual pages and other documentation are copyrighted by their respective writers; their sources are available at the project’s CVSweb, AnonCVS and other mirrors. The rest is Copyright © 2002–2022 MirBSD.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report — diffs preferred.

Kontakt / Impressum & Datenschutzerklärung