A shell script to handle precomp+zpaq compression workflow.

Zip archives of nearly-identical data might be almost entirely different after compression. Best compression can be had by unpacking the archives first; but naively doing so loses bit-exact archive reconstruction. By using a precomp pass, as well as a global deduplicating compressor, maximum storage efficiency can be achieved.

  • Parallel precomp scanning
  • Graphical extraction interface
  • Dependencies: precomp, zpaq, dialog, and GNU Parallel
  • Assumes Cygwin, although porting would be possible


  assimilate [options]

  {no option argument}  Begin interactive pack/unpack workflow
  --child 'arg'         (Internal use only)
  --help                Display this message
  --pack                Immediately pack
  --unpack-menu         Begin interactive unpack workflow


2015-11-08: r04

2015-11-08: r01