1 .TH COMM 1 "2008-1.01" "pdcore utilities" "User Commands"
3 comm \- select or reject lines common to two files
8 Read 'file1' and 'file2', both of which should be ordered in the current
9 collating sequence, and produce three text columns as output: lines unique
10 to 'file1', lines unique to 'file2', and lines common to both files.
14 Suppress output of column one (lines unique to 'file1').
17 Suppress output of column two (lines unique to 'file2').
20 Suppress output of column three (lines common to both files).
25 Input files. If none provided, or the filename '-' is passed to comm,
26 standard input will be used.
27 .SH "AUTHORITATIVE DOCUMENTATION"
28 <http://www.opengroup.org/onlinepubs/9699919799/utilities/comm.html>
29 .SH VERSION AND COMPLIANCE
32 Functional compliance with POSIX:2008 (IEEE Std 1003.1-2008;
33 Shell and Utilities, Base Specifications Issue 7).
35 This is free and unencumbered software released into the public domain,
36 provided "as is", without warranty of any kind, express or implied. See the
37 file UNLICENSE and the website <http://unlicense.org> for further details.