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Command: comm | Section: 1 | Source: UNIX v7 | File: comm.1
COMM(1) General Commands Manual COMM(1)
NAME
comm - select or reject lines common to two sorted files
SYNOPSIS
comm [ - [ 123 ] ] file1 file2
DESCRIPTION
Comm reads file1 and file2, which should be ordered in ASCII collating
sequence, and produces a three column output: lines only in file1;
lines only in file2; and lines in both files. The filename `-' means
the standard input.
Flags 1, 2, or 3 suppress printing of the corresponding column. Thus
comm -12 prints only the lines common to the two files; comm -23 prints
only lines in the first file but not in the second; comm -123 is a no-
op.
SEE ALSO
cmp(1), diff(1), uniq(1)
COMM(1)