comm Man page

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.

When FILE1 or FILE2 (not both) is -, read standard input.

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

-z, –zero-terminated
line delimiter is NUL, not newline

–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

GNU coreutils online help:
Report comm translation bugs to

COPRYRIGHT

Copyright © 2016 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later .
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, uniq

Full documentation at:
or available locally via: info ‘(coreutils) comm invocation’

GNU coreutils 8.25 February 2016 COMM(1)

Ils en parlent aussi

htop expliqué, partie 3 : les processus | Le blog de Carl Chenet
Commonly using “ps and” switches with example – Unix/Linux
Auditd logging all ands – WHMCR