comm - display lines in common, and lines not in common, between two sorted lists

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SYNOPSIS

DESCRIPTION

comm reads filename1 and filename2, which should be ordered in ASCII collating sequence (see sort.1v and produces three-column output when no options are specified:

• Column 1 contains lines that occur only in filename1.
• Column 2 contains lines only in filename2.
• Column 3 contains lines common to both files.

The filename `-' means the standard input.

OPTIONS

The following options can be used to suppress the indicated columns from display. You can specify `-123', but doing so suppresses all output.

-1

Suppress column 1; omit lines only in filename1.

-2

Suppress column 2; omit lines only in filename2.

-3

Suppress column 3; omit lines common to both files.

-12

Suppress columns 1 and 2; only show lines common to both files.

-13

Suppress columns 1 and 3; only show lines in filename2.

-23

Suppress columns 2 and 3; only show lines in filename1.

SEE ALSO

BUGS

The options suppress, rather than select the columns you indicate.

Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97