gerardo@wpi.WPI.EDU (Gerardo Leute) (04/01/91)
Is there a utility that will uncompress files using the adaptive Lempel-Ziv
coding system? I would like to use the unix 'compress' command to make files
smaller, downloading them, and then uncompressing them on the Apple (gs).
Thanks!
--
Gerardo Leute "Home is where the heart lies,
but when the heart lies, where is home?"
gerardo@wpi.wpi.edulucifer@world.std.com (Kevin S Green) (04/04/91)
In article <1991Mar31.235843.21088@wpi.WPI.EDU> gerardo@wpi.WPI.EDU (Gerardo Leute) writes: >Is there a utility that will uncompress files using the adaptive Lempel-Ziv >coding system? I would like to use the unix 'compress' command to make files >smaller, downloading them, and then uncompressing them on the Apple (gs). Gerardo, Get GSShrinkit v1.04 by Andy Nicholas. A good FTP location is tybalt.caltech.edu. -- Kevin S. Green / lucifer@world.std.com / {xylogics;uunet}!world!lucifer
wilner@motcid.UUCP (Corey S. Wilner) (04/06/91)
lucifer@world.std.com (Kevin S Green) writes: >In article <1991Mar31.235843.21088@wpi.WPI.EDU> gerardo@wpi.WPI.EDU (Gerardo Leute) writes: >>Is there a utility that will uncompress files using the adaptive Lempel-Ziv >>coding system? I would like to use the unix 'compress' command to make files >>smaller, downloading them, and then uncompressing them on the Apple (gs). >Gerardo, > Get GSShrinkit v1.04 by Andy Nicholas. A good FTP location is > tybalt.caltech.edu. Is there such a beast for the Apple //e. I too would like to compress some UNIX files before grabbing them with my Apple. Does Shrinkit 3.2.3 do the job? ******************************************************** Corey S. Wilner | | __o Motorola Cellular | ..!uunet!motcid!wilner | -\<, 708-632-7206 | motcid!wilner@uunet.UU.NET | O/ O ******************************************************** McAfee's Law of Physical Material Balance: Matter can be neither created nor destroyed. However, it can be lost!
parkern@jacobs.CS.ORST.EDU (Neil Parker) (04/07/91)
In article <4497@mint17.UUCP> wilner@motcid.UUCP (Corey S. Wilner) writes: >lucifer@world.std.com (Kevin S Green) writes: >>In article <1991Mar31.235843.21088@wpi.WPI.EDU> gerardo@wpi.WPI.EDU (Gerardo Leute) writes: >>>Is there a utility that will uncompress files using the adaptive Lempel-Ziv >>>coding system? I would like to use the unix 'compress' command to make files >>>smaller, downloading them, and then uncompressing them on the Apple (gs). >>Gerardo, >> Get GSShrinkit v1.04 by Andy Nicholas. A good FTP location is >> tybalt.caltech.edu. >Is there such a beast for the Apple //e. I too would like to compress some UNIX >files before grabbing them with my Apple. Does Shrinkit 3.2.3 do the job? Alas, there will probably never be such a beast for the standard Apple //e (i.e. one without lots of memory expansion cards). The problem is that Lempel-Ziv is a major memory hog. It works by building a huge dictionary of strings, and building a dictionary big enough to match UNIX compress requires far more memory than most //e's have (over 400K, in fact). The reason Shrinkit can do Lempel-Ziv on an Apple //e is that it doesn't try to match UNIX compress...it uses a dictionary small enough to fit into the Apple's memory. If the size of the UNIX compress dictionary were similarly restricted (which is fairly easy to do--use "compress -b12"), it would theoretically be possible to uncompress the resulting file on an Apple //e (unfortunately, to the best of my knowledge, nobody has yet written a program to do so.) - Neil Parker -- Neil Parker No cute ASCII art...no cute quote...no cute parkern@jacobs.cs.orst.edu disclaimer...no deposit, no return... parker@corona.uoregon.edu (This space intentionally left blank: )