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
multithreading 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 nothing, but sending SIGUSR1
terminates the process instead of displaying progress information.
- -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.
- 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(1)
XZ Embedded: <https://tukaani.org/xz/embedded.html>