comm(1)comm(1)Namecomm - compare sorted data
Syntaxcomm [-] file1 file2
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.
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 Alsocmp(1), diff(1), diff3(1), diffmk(1), join(1), uniq(1)comm(1)