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)
BUGS
1