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COMM.MAN
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1988-03-28
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COMM ST-UNIX User's Manual COMM
COMMAND
comm - find lines common to both files.
FORMAT
comm [ - [ 123 ] ] file1 file2
DESCRIPTION
_✓C_✓o_✓m_✓m reads _✓f_✓i_✓l_✓e_✓1 and _✓f_✓i_✓l_✓e_✓2, which should be sorted (e.g.
using _✓s_✓o_✓r_✓t) and produces output prefixed by a digit indicat-
ing whether the line was in _✓f_✓i_✓l_✓e_✓1, _✓f_✓i_✓l_✓e_✓2 or both (where 3
indicates both) Specifying `-' as a filename will cause the
standard input to be used instead.
Flags 1, 2, or 3 suppress printing of the corresponding
results.
Examples:
comm -12 prints lines common to both files.
comm -23 prints lines in _✓f_✓i_✓l_✓e_✓1 but not in _✓f_✓i_✓l_✓e_✓2.
Printed 28/March/1988 30 March 1987 1