| Title: | AMIGA NOTES |
| Notice: | Join us in the *NEW* conference - HYDRA::AMIGA_V2 |
| Moderator: | HYDRA::MOORE |
| Created: | Sat Apr 26 1986 |
| Last Modified: | Wed Feb 05 1992 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 5378 |
| Total number of notes: | 38326 |
Does anybody know of a decoder/depacker/dearcer/de-whatever program
for files packed with 'Lempel-Ziv data compression'? A friend who
runs a local bulletin board has gotten his hands on some files he
claims are packed with this type of data compression. File names
all have a .Z extension. ...says Lempel-Ziv is from the Unix world?
Anyway, I told him I'd throw a request to the DEC 'Amiga-wolves'
to see if they had any ideas. :-)
Thanx,
John
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1742.1 | Fred Fish has it | TLE::RMEYERS | Randy Meyers | Tue Oct 04 1988 19:25 | 2 |
A program to do Lempel-Ziv compression is on fish disk 6, and an updated version of it is on fish disk 51. | |||||
| 1742.2 | Try PKAX | DPDMAI::ANDERSONA | Tue Oct 04 1988 23:41 | 15 | |
In the MSDOS world there is a program called PKARC that a replacement
for ARC that uses Ziz-Lempel-Welch Crunching and squashing. It is
written by Pkware Inc. Actually it is two programsd PKARC is the
archeiving program and PKXARC is the un-archeiving program. It
is generally faster than the old ARC program is. In the latest
issue of Amigo Times there was a copy of PKAX which is the Amiga
version of PKXARC. The doc file stated that they were planning
on a Amiga version of PKARC. It was P.D. for private use and shareware
for commercial use in the MSDOS world.
PKAX does unarc faster than the old ARC program. But it is still
limited to MSDOS file name lengths.
Alan
| |||||
| 1742.3 | Compress predates ARC and ZOO | NAC::PLOUFF | Cider Season Has Begun | Wed Oct 05 1988 12:33 | 9 |
UNIX 'compress' is an L-Z data compressor which puts out compressed
files named 'filename.Z'. The Compress program mentioned in one
of the replies is a direct port so should work fine. Also, the
programs LZCOMP and LZDCMP in the VMS Toolshed are compatible.
ARC's 'squeezing' and 'squashing' functions as well as ZOO's
compression method are all variants of the UNIX compress algorithm.
Wes
| |||||
| 1742.4 | SDBACKUP? | JFRSON::OSBORNE | Blade Walker | Wed Oct 05 1988 15:49 | 6 |
It's embarassing that I can't remember, but I think Steve Drew's backup program, SDBACKUP, uses the L-Z packing scheme, and writes files with ".Z" extensions. If your friend uses this, it could unpack all the files at once, by "restoring"... John O. | |||||