comm(1)          (Directory and File Management Utilities)          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).


































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