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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_OPT
       environment variable.  xzdec doesn't support displaying intermediate
       progress information: sending SIGINFO to xzdec does nothing, but
       sending SIGUSR1 terminates the process instead of displaying progress
       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.

       -M limit, --memory=limit
              Set the memory usage limit.  If this option is specified
              multiple times, the last one takes effect. The limit can be
              specified in multiple ways:

              o  The limit can be an absolute value in bytes. Using an integer
                 suffix like MiB can be useful. Example: --memory=80MiB

              o  The limit can be specified as a percentage of physical RAM.
                 Example: --memory=70%

              o  The limit can be reset back to its default value by setting
                 it to 0.

              o  The memory usage limiting can be effectively disabled by
                 setting limit to max.  This isn't recommended. It's usually
                 better to use, for example, --memory=90%.

              The current limit can be seen near the bottom of the output of
              the --help option.

       -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.

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
       xzdec and lzmadec are not really that small. The size can be reduced
       further by dropping features from liblzma at compile time, but that
       shouldn't usually be done for executables 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                           2010-03-07                          XZDEC(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | NOTES | SEE ALSO

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