comm(1)                  USER COMMANDS                    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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