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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)