xzdec(1)

XZDEC(1)                    XZ Utils                     XZDEC(1)

NAME

     xzdec, lzmadec - Small .xz and .lzma decompressors

SYNOPSIS

     xzdec [option...]  [file...]
     lzmadec [option...]  [file...]

DESCRIPTION

     xzdec is a liblzma-based  decompression-only  tool  for  .xz
     (and  only .xz) files.  xzdec is intended to work as a drop-
     in replacement for xz(1) in the most common situations where
     a  script  has  been written to use xz --decompress --stdout
     (and  possibly  a  few  other  commonly  used  options)   to
     decompress  .xz files.  lzmadec is identical to xzdec except
     that lzmadec supports .lzma files instead of .xz files.

     To reduce the size of the executable, xzdec doesn't  support
     multithreading  or  localization,  and  doesn't read options
     from XZ_DEFAULTS and XZ_OPT  environment  variables.   xzdec
     doesn't  support  displaying  intermediate progress informa-
     tion: sending SIGINFO to xzdec  does  nothing,  but  sending
     SIGUSR1  terminates  the  process instead of displaying pro-
     gress information.

OPTIONS

     -d, --decompress, --uncompress
          Ignored for xz(1) compatibility.  xzdec  supports  only
          decompression.

     -k, --keep
          Ignored for xz(1) compatibility.  xzdec  never  creates
          or removes any files.

     -c, --stdout, --to-stdout
          Ignored for xz(1) compatibility.  xzdec  always  writes
          the decompressed data to standard output.

     -q, --quiet
          Specifying this once does  nothing  since  xzdec  never
          displays  any  warnings or notices.  Specify this twice
          to suppress errors.

     -Q, --no-warn
          Ignored for xz(1) compatibility.  xzdec never uses  the
          exit status 2.

     -h, --help
          Display a help message and exit successfully.

     -V, --version
          Display the version number of xzdec and liblzma.

Tukaani              Last change: 2013-06-30                    1

XZDEC(1)                    XZ Utils                     XZDEC(1)

EXIT STATUS

     0    All was good.

     1    An error occurred.

     xzdec doesn't have any warning messages like xz(1) has, thus
     the exit status 2 is not used by xzdec.

NOTES

     Use xz(1) instead of xzdec or lzmadec  for  normal  everyday
     use.   xzdec  or lzmadec are meant only for situations where
     it is important to have  a  smaller  decompressor  than  the
     full-featured xz(1).

     xzdec and lzmadec are not really that small.  The  size  can
     be reduced further by dropping features from liblzma at com-
     pile time, but that shouldn't usually be  done  for  execut-
     ables  distributed  in typical non-embedded operating system
     distributions.  If you need a truly small .xz  decompressor,
     consider using XZ Embedded.

SEE ALSO

     xz(1)

     XZ Embedded: <http://tukaani.org/xz/embedded.html>

Tukaani              Last change: 2013-06-30                    2