Scientific Operations



COMM(I)                      5/15/74                      COMM(I)



NAME
     comm - print lines common to two files

SYNOPSIS
     comm [ - [ 123 ] ] file1 file2

DESCRIPTION
     Comm  reads  file1  and  file2, which should be in sort, 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 col-
     umn.   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(I), diff(I)

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