XZDEC(1) XZ Utils XZDEC(1)NAME
xzdec, lzmadec - Small .xz and .lzma decompressors
xzdec [option]... [file]...
lzmadec [option]... [file]...
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 multi‐
threading or localization, and doesn't read options from XZ_DEFAULTS
and XZ_OPT environment variables. xzdec doesn't support displaying
intermediate progress information: sending SIGINFO to xzdec does noth‐
ing, but sending SIGUSR1 terminates the process instead of displaying
OPTIONS-d, --decompress, --uncompress
Ignored for xz(1) compatibility. xzdec supports only decompres‐
Ignored for xz(1) compatibility. xzdec never creates or removes
-c, --stdout, --to-stdout
Ignored for xz(1) compatibility. xzdec always writes the decom‐
pressed data to standard output.
Specifying this once does nothing since xzdec never displays any
warnings or notices. Specify this twice to suppress errors.
Ignored for xz(1) compatibility. xzdec never uses the exit sta‐
Display a help message and exit successfully.
Display the version number of xzdec and liblzma.
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.
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 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.
XZ Embedded: <http://tukaani.org/xz/embedded.html>
Tukaani 2010-09-27 XZDEC(1)