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OpenSolaris 2009.06 - man page for cmp (opensolaris section 1)

cmp(1)					  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 writes 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 initial subsequence of the other, that fact is noted. skip1 and skip2 are  ini-
       tial byte offsets into file1 and file2 respectively, and can 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 status only.

OPERANDS
       The following operands are supported:

       file1	A path name of the first file to be compared. If file1 is -, the  standard  input
		is used.

       file2	A  path name of the second file to be compared. If file2 is -, the standard input
		is 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).

EXAMPLES
       Example 1 Comparing Files Byte for Byte

       The following example does a byte for byte comparison of file1 and file2:

	 example% cmp file1 file2 0 1024

       It skips the first 1024 bytes in file2 before starting the comparison.

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 attributes:

       +-----------------------------+-----------------------------+
       |      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 5.11				   19 Jul 2006					   cmp(1)


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