COMM(1) UNIX Programmer's Manual COMM(1) NNAAMMEE comm - select or reject lines common to two sorted files SSYYNNOOPPSSIISS ccoommmm [ -- [ 112233 ] ] file1 file2 DDEESSCCRRIIPPTTIIOONN _C_o_m_m reads _f_i_l_e_1 and _f_i_l_e_2, which should be ordered in ASCII collating sequence, and produces a three column output: lines only in _f_i_l_e_1; lines only in _f_i_l_e_2; and lines in both files. The filename `-' means the standard input. Flags 1, 2, or 3 suppress printing of the corresponding column. Thus ccoommmm --1122 prints only the lines common to the two files; ccoommmm --2233 prints only lines in the first file but not in the second; ccoommmm --112233 is a no-op. SSEEEE AALLSSOO cmp(1), diff(1), uniq(1) Printed 7/9/88 April 29, 1985 1