NAME [Toc] [Back]
cmp - compare two files
SYNOPSIS [Toc] [Back]
cmp [-l] [-s] file1 file2 [skip1 [skip2]]
DESCRIPTION [Toc] [Back]
cmp compares two files (if file1 or file2 is -, the standard input is
used). Under default options, cmp makes no comment if the files are
the same; if they differ, it announces the byte and line number at
which the difference occurred. If one file is an initial subsequence
of the other, that fact is noted. skip1 and skip2 are initial byte
offsets into file1 and file2, respectively; and maybe octal or
decimal; the form of the number is determined by the environment
variable LC_NUMERIC (in the C locale, a leading 0 denotes an octal
number. See LANG on environ(5) and strtol(3C)).
cmp recognizes the following options:
-l Print the byte number (decimal) and the differing bytes
(octal) for each difference (byte numbering begins at 1
rather than 0).
-s Print nothing for differing files; return codes only.
EXTERNAL INFLUENCES [Toc] [Back]
LANG determines the language in which messages are displayed. If LANG
is not specified or is set to the empty string, a default of "C" (see
lang(5)) is used instead of LANG. If any internationalization
variable contains an invalid setting, cmp behaves as if all
internationalization variables are set to "C". See environ(5).
International Code Set Support [Toc] [Back]
Single- and multi-byte character code sets are supported.
DIAGNOSTICS [Toc] [Back]
cmp returns the following exit values:
0 Files are identical.
1 Files are not identical.
2 Inaccessible or missing argument.
cmp prints the following warning if the comparison succeeds till the
end of file of file1(file2) is reached.
cmp: EOF on file1(file2)
SEE ALSO [Toc] [Back]
Hewlett-Packard Company - 1 - HP-UX 11i Version 2: August 2003
STANDARDS CONFORMANCE [Toc] [Back]
cmp: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2
Hewlett-Packard Company - 2 - HP-UX 11i Version 2: August 2003 [ Back ]