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224_01
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comm.hlp
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1987-01-06
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19 lines
NAME
comm - select or reject lines common to two sorted files
SYNTAX
comm [ - [ 123 ] ] file1 file2
DESCRIPTION
Comm reads file1 and file2, which should be sorted, and produces
a three column output: lines only in file1; lines only in file2;
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, uniq