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comm - comm

NAME  SYNOPSIS  DESCRIPTION  Arguments:  OPTIONS 

NAME

comm − comm

SYNOPSIS

comm [OPTION]... FILE1 FILE2

DESCRIPTION

Compare two sorted files 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.

Arguments:

<FILE1> <FILE2>

OPTIONS

−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)

−−output−delimiter <STR>

separate columns with STR

−z, −−zero−terminated

line delimiter is NUL, not newline

−−total

output a summary

−−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

−h, −−help

Print help

−V, −−version

Print version


Updated 2026-06-01 - jenkler.se | uex.se