cmp(1)
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cmp Command
compare two files
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SYNTAX
cmp [ -l ] [ -s ] file1 file2
DESCRIPTION
Cmp compares two files. (If file1 is -, the standard input is
used.) Under all options, cmp makes no comment if the files are
the same. If the files differ, cmp announces the byte and line
number where the difference occurred. If one file is an initial
subsequence of the other, that fact is noted.
Options:
-l Print the byte number (decimal) and the differing bytes
(octal) for each difference.
-s Print nothing for differing files; return codes only. If
the files are the same, cmp prints nothing.
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EXAMPLES
$ cmp -l oldmembers currentmembers
This example will compare the file "old_members" with the file
"current_members" and report all differences.
$ cmp -s allowed users
This example will compare the file "allowed" with the file
"users" and return a standard exit code but no other output.
This is useful to compare two files then test the exit code in a
shell script.
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SEE ALSO
comm(1), diff(1).
DG/UX 4.00 Page 1
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cmp(1)
DIAGNOSTICS
Exit code 0 is returned for identical files, 1 for different
files, and 2 for an inaccessible file or missing argument.
DG/UX 4.00 Page 2
Licensed material--property of copyright holder(s)