comm

Documentation

Overview

Perform a set comparisons over two files.

Synopsis:

comm [-123h] FILE1 FILE2

Descrption:

Comm reads file1 and file2, which are in lexicographical order, and
produces a three column output: lines only in file1; lines only in
file2; and lines in both files. The file name – means the standard
input.

Options:

-1: suppress printing of column 1
-2: suppress printing of column 2
-3: suppress printing of column 3
-h: print this help message and exit