cmp(1)cmp(1)Namecmp - compare two files
Syntaxcmp [-l | -s] file1 file2 [ skip1 ] [ skip2 ]
The command compares two files. If either file1 or file2 is `-', stan‐
dard input is used for the file. With no options, makes no comment if
the files are the same. If they differ, it reports the byte and line
number at which the difference occurred to standard output. If one
file is an initial subsequence of the other a message including the
file name is written to standard error.
The optional skip1 and skip2 parameters are initial byte offsets into
file1 and file2 respectively and may be either octal, by specifying a
leading 0, or decimal. When using skip1 and skip2 the offset is
treated as the start of the respective input file. Only one option may
be specified at a time. Only one of the input files may be standard
input at a time. Because the line number is not calculated when using
either of the options the use of either flag will increase the speed of
Options-l Long format: prints the byte number (decimal) and the differing
bytes (octal) for each difference.
-s Suppresses normal output and sets the exit code only.
Exit code 0 is returned for identical files, 1 for different files, and
2 for an inaccessible or missing argument.
See Alsocomm(1), diff(1)cmp(1)