comm(1) General Commands Manual comm(1)
Name
comm - compare sorted data
Syntax
comm [-[123]] file1 file2
Description
The command reads file1 and file2, which should be ordered in ASCII collating sequence, 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.
Options
1 Suppresses column one: lines in file1 only.
2 Suppresses column two: lines in file2 only.
3 Suppresses column three: lines in file1 and file2.
Thus -12 prints only the lines common to the two files. And -23 prints only lines in the first file but not in the second. Finally, -123
is not an option.
See Also
cmp(1), diff(1), diff3(1), diffmk(1), join(1), uniq(1)
comm(1)
