32v 1m comm

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

NAME

    comm - select or reject lines common to two sorted files

SYNOPSIS

    comm [ - [ 123 ] ] file1 file2

DESCRIPTION

    _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 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(1), diff(1), uniq(1)