BSD 4_3_Tahoe development

[unix-history] / usr / man / cat1 / comm.0

COMM(1)             UNIX Programmer's Manual              COMM(1)



N\bNA\bAM\bME\bE
    comm - select or reject lines common to two sorted files

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
    c\bco\bom\bmm\bm [ -\b- [ 1\b12\b23\b3 ] ] file1 file2

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
    _\bC_\bo_\bm_\bm reads _\bf_\bi_\bl_\be_\b1 and _\bf_\bi_\bl_\be_\b2, which should be ordered in ASCII
    collating sequence, and produces a three column output:
    lines only in _\bf_\bi_\bl_\be_\b1; lines only in _\bf_\bi_\bl_\be_\b2; and lines in both
    files.  The filename `-' means the standard input.

    Flags 1, 2, or 3 suppress printing of the corresponding
    column.  Thus c\bco\bom\bmm\bm -\b-1\b12\b2 prints only the lines common to the
    two files; c\bco\bom\bmm\bm -\b-2\b23\b3 prints only lines in the first file but
    not in the second; c\bco\bom\bmm\bm -\b-1\b12\b23\b3 is a no-op.

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
    cmp(1), diff(1), uniq(1)




































Printed 7/9/88           April 29, 1985                         1