COMM(1)                                                   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 (see sort(1)), 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.

          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 prints nothing.

     SEE ALSO
          cmp(1), diff(1), sort(1), uniq(1).

     ORIGIN
          AT&T V.3
































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