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cmp(1) [ultrix man page]

cmp(1)							      General Commands Manual							    cmp(1)

       cmp - compare two files

       cmp [-l | -s] file1 file2  [ skip1 ]  [ skip2 ]

       The  command  compares two files.  If either file1 or file2 is `-', standard 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

       -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 Also
       comm(1), diff(1)


Check Out this Related Man Page

CMP(1)							    BSD General Commands Manual 						    CMP(1)

cmp -- compare two files SYNOPSIS
cmp [-l | -s | -x] [-hz] file1 file2 [skip1 [skip2]] DESCRIPTION
The cmp utility compares two files of any type and writes the results to the standard output. By default, cmp 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: -h Do not follow symbolic links. -l Print the byte number (decimal) and the differing byte values (octal) for each difference. -s Print nothing for differing files; return exit status only. -x Like -l but prints in hexadecimal and using zero as index for the first byte in the files. -z For regular files compare file sizes first, and fail the comparison if they are not equal. The optional arguments skip1 and skip2 are the byte offsets from the beginning of file1 and file2, respectively, where the comparison will begin. The offset is decimal by default, but may be expressed as a hexadecimal or octal value by preceding it with a leading ``0x'' or ``0''. EXIT STATUS
The cmp utility exits with one of the following values: 0 The files are identical. 1 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 -s option has not been specified, cmp writes to standard error that EOF was reached in the shorter file (before any differences were found). >1 An error occurred. SEE ALSO
diff(1), diff3(1) STANDARDS
The cmp utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. The -h, -x, and -z options are extensions to the standard. HISTORY
A cmp command appeared in Version 1 AT&T UNIX. BSD
November 18, 2013 BSD
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