COMM(I) 8/21/73 COMM(I)
NAME
comm - print lines common to two files
SYNOPSIS
comm [ - [ 123 ] ] file1 file2 [ file3 ]
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.
If file3 is given, the output will be placed there;
otherwise it will be written on the standard output.
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
uniq(I), proof(I), cmp(I)
BUGS