pristine-xz - regenerate pristine xz files
pristine-xz [OPTIONS] gendelta
file.xz delta
pristine-xz [OPTIONS] genxz
delta file
This is a complement to the
pristine-tar(1) command. Normally you don't
need to run it by hand, since pristine-tar calls it as necessary to handle
.tar.xz files.
pristine-xz gendelta takes the specified
xz file, and generates a small
binary
delta file that can later be used by pristine-xz genxz to
recreate the original file.
pristine-xz genxz takes the specified
delta file, and compresses the
specified input
file (which must be identical to the contents of the
original xz file). The resulting file will be identical to the original gz
file used to create the delta.
The approach used to regenerate the original xz file is to figure out how it was
produced -- what compression level was used, etc. Currently support is poor
for xz files produced with unusual compression options.
If the delta filename is "-", pristine-xz reads or writes it to stdio.
- -v
- Verbose mode, show each command that is run.
- -d
- Debug mode.
- -k
- Don't clean up the temporary directory on exit.
- -t
- Try harder to determine how to generate deltas of difficult
xz files.
- TMPDIR
- Specifies a location to place temporary files, other than
the default.
Joey Hess <
[email protected]>, Faidon Liambotis
<
[email protected]>, Cyril Brulebois
<
[email protected]>
Licensed under the GPL, version 2.