Pdlzip uses the lzip file format; the files produced by pdlzip are (hope)fully compatible with lzip-1.4 or newer. Pdlzip is in fact a "public domain" version of the lzip data compressor, intended for those who can't distribute GPL licensed Free Software.
The lzip file format is designed for long-term data archiving. It is clean, provides very safe 4 factor integrity checking, and is backed by the recovery capabilities of lziprecover.
Pdlzip is also able to decompress legacy lzma-alone (.lzma) files.
Pdlzip is written in C.
Pdlzip includes public domain compression code from the LZMA SDK written by Igor Pavlov.
NOTE: As the two reasons for the creation of pdlzip seem to be no longer valid (lzma-alone files are no longer used and I have no proof that any user is prevented from using lzip/clzip on their systems for legal reasons), pdlzip may be discontinued in the future.
Learn more about lzip in the Lzip Home Page.
The manual is available in the info system of the GNU Operating System. Use info to access the top level info page. Use info lzip to access the lzip section directly.
An online manual for lzip can be found here.
An archive of the bug report mailing list is available at http://lists.gnu.org/mailman/listinfo/lzip-bug.
See also the lzip project page at Savannah.
You are free to copy, modify and distribute all or part of this article without limitation.