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The cmp utility compares two files
of any type and writes the results to the standard output. By default,
is silent if the files are the same; if they differ, the byte and line
number at which the first difference occurred is reported. Bytes and lines
are numbered beginning with one. The following options are available:
Print the byte number (decimal) and the differing byte values (octal)
for each difference. Print nothing for differing files; return exit status
only. The optional arguments and are the byte offsets from the beginning
of and respectively, where the comparison will begin. The offset is decimal
by default, but may be expressed as an hexadecimal or octal value by preceding
it with a leading ``0x'' or ``0''. The utility exits with one of the following
values: The files are identical. The files are different; this includes
the case where one file is identical to the first part of the other. In
the latter case, if the option has not been specified, writes to standard
output that EOF was reached in the shorter file (before any differences
were found). An error occurred.
The utility is
expected to be compatible.
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