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User Commands cmp(1)
NAME
cmp - compare two files
SYNOPSIS
cmp [-l] [-s] file1 file2 [skip1] [skip2]
DESCRIPTION
The cmp utility compares two files. cmp will write no output
if the files are the same. Under default options, if they
differ, it writes to standard output the byte and line
numbers at which the first difference occurred. Bytes and
lines are numbered beginning with 1. If one file is an ini-
tial subsequence of the other, that fact is noted. skip1 and
skip2 are initial byte offsets into file1 and file2 respec-
tively, and may be either octal or decimal; a leading 0
denotes octal.
OPTIONS
The following options are supported:
-l Write the byte number (decimal) and the differing
bytes (octal) for each difference.
-s Write nothing for differing files; return exit sta-
tuses only.
OPERANDS
The following operands are supported:
file1 A path name of the first file to be compared. If
file1 is -, the standard input will be used.
file2 A path name of the second file to be compared. If
file2 is -, the standard input will be used.
If both file1 and file2 refer to standard input or refer to
the same FIFO special, block special or character special
file, an error results.
USAGE
See largefile(5) for the description of the behavior of cmp
when encountering files greater than or equal to 2 Gbyte (2
**31 bytes).
SunOS 5.10 Last change: 1 Feb 1995 1
User Commands cmp(1)
EXAMPLES
Example 1: Comparing files byte for byte
The following example:
example% cmp file1 file2 0 1024
does a byte for byte comparison of file1 and file2. It skips
the first 1024 bytes in file2 before starting the com-
parison.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment
variables that affect the execution of cmp: LANG, LC_ALL,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
EXIT STATUS
The following error values are returned:
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.
>1 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
| CSI | enabled |
|_____________________________|_____________________________|
| Interface Stability | Standard |
|_____________________________|_____________________________|
SEE ALSO
comm(1), diff(1), attributes(5), environ(5), largefile(5),
standards(5)
SunOS 5.10 Last change: 1 Feb 1995 2
Man(1) output converted with
man2html and wrapped by fishsponge
This page was generated on Wed Sep 12 11:24:30 GMT 2007
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