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(diff.info.gz) cmp Options

Info Catalog (diff.info.gz) Invoking cmp
 
 Options to `cmp'
 ================
 
    Below is a summary of all of the options that GNU `cmp' accepts.
 Most options have two equivalent names, one of which is a single letter
 preceded by `-', and the other of which is a long name preceded by
 `--'.  Multiple single letter options (unless they take an argument)
 can be combined into a single command line word: `-bl' is equivalent to
 `-b -l'.
 
 `-b'
 `--print-bytes'
      Print the differing bytes.  Display control bytes as a `^'
      followed by a letter of the alphabet and precede bytes that have
      the high bit set with `M-' (which stands for "meta").
 
 `--help'
      Output a summary of usage and then exit.
 
 `-i SKIP'
 `--ignore-initial=SKIP'
      Ignore any differences in the first SKIP bytes of the input files.
      Treat files with fewer than SKIP bytes as if they are empty.  If
      SKIP is of the form `FROM-SKIP:TO-SKIP', skip the first FROM-SKIP
      bytes of the first input file and the first TO-SKIP bytes of the
      second.
 
 `-l'
 `--verbose'
      Print the (decimal) byte numbers and (octal) values of all
      differing bytes.
 
 `-n COUNT'
 `--bytes=COUNT'
      Compare at most COUNT input bytes.
 
 `-s'
 `--quiet'
 `--silent'
      Do not print anything; only return an exit status indicating
      whether the files differ.
 
 `-v'
 `--version'
      Output version information and then exit.
 
    In the above table, operands that are byte counts are normally
 decimal, but may be preceded by `0' for octal and `0x' for hexadecimal.
 
    A byte count can be followed by a suffix to specify a multiple of
 that count; in this case an omitted integer is understood to be 1.  A
 bare size letter, or one followed by `iB', specifies a multiple using
 powers of 1024.  A size letter followed by `B' specifies powers of 1000
 instead.  For example, `-n 4M' and `-n 4MiB' are equivalent to `-n
 4194304', whereas `-n 4MB' is equivalent to `-n 4000000'.  This
 notation is upward compatible with the SI prefixes
 (http://www.bipm.fr/enus/3_SI/si-prefixes.html) for decimal multiples
 and with the IEC 60027-2 prefixes for binary multiples
 (http://physics.nist.gov/cuu/Units/binary.html).
 
    The following suffixes are defined.  Large sizes like `1Y' may be
 rejected by your computer due to limitations of its arithmetic.
 
 `kB'
      kilobyte: 10^3 = 1000.
 
 `k'
 `K'
 `KiB'
      kibibyte: 2^10 = 1024.  `K' is special: the SI prefix is `k' and
      the IEC 60027-2 prefix is `Ki', but tradition and POSIX use `k' to
      mean `KiB'.
 
 `MB'
      megabyte: 10^6 = 1,000,000.
 
 `M'
 `MiB'
      mebibyte: 2^20 = 1,048,576.
 
 `GB'
      gigabyte: 10^9 = 1,000,000,000.
 
 `G'
 `GiB'
      gibibyte: 2^30 = 1,073,741,824.
 
 `TB'
      terabyte:  10^12 = 1,000,000,000,000.
 
 `T'
 `TiB'
      tebibyte: 2^40 = 1,099,511,627,776.
 
 `PB'
      petabyte: 10^15 = 1,000,000,000,000,000.
 
 `P'
 `PiB'
      pebibyte: 2^50 = 1,125,899,906,842,624.
 
 `EB'
      exabyte: 10^18 = 1,000,000,000,000,000,000.
 
 `E'
 `EiB'
      exbibyte: 2^60 = 1,152,921,504,606,846,976.
 
 `ZB'
      zettabyte: 10^21 = 1,000,000,000,000,000,000,000
 
 `Z'
 `ZiB'
      2^70 = 1,180,591,620,717,411,303,424.  (`Zi' is a GNU extension to
      IEC 60027-2.)
 
 `YB'
      yottabyte: 10^24 = 1,000,000,000,000,000,000,000,000.
 
 `Y'
 `YiB'
      2^80 = 1,208,925,819,614,629,174,706,176.  (`Yi' is a GNU
      extension to IEC 60027-2.)
 
Info Catalog (diff.info.gz) Invoking cmp
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