cmp

 

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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
      -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).
 
 EXAMPLES
      Example 1: Byte for byte comparison of files.
 
      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.
 
 
 
 
 SunOS 5.8            Last change: 1 Feb 1995                    1
 
 
 
 
 
 
 User Commands                                              cmp(1)
 
 
 
 ENVIRONMENT VARIABLES
      See environ(5) for descriptions of the following environment
      variables  that  affect  the  execution  of  cmp:  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                     |
     |_____________________________|_____________________________|
 
 


SEE ALSO
      comm(1), diff(1), attributes(5), environ(5), largefile(5)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8            Last change: 1 Feb 1995                    2
 
 
 

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