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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 lz-
madec 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 in-
termediate 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 decompres-
sion.
-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 decom-
pressed 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 sta-
tus 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
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.
SEE ALSO
xz(1)
XZ Embedded: <https://tukaani.org/xz/embedded.html>
Tukaani 2017-04-19 XZDEC(1)
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