rahardj@ccu.umanitoba.ca (Budi Rahardjo) (04/13/91)
I have just downloaded KA9Q's NET program from wuarchive. It is interesting to see that the compressed (ARCed) and the actual file is almost the same size : NET-0308 ARC 181175 NET EXE 181144 Maybe it's better to store the exe version. (save extract time :-) -- budi
w8sdz@rigel.acs.oakland.edu (Keith Petersen) (04/13/91)
rahardj@ccu.umanitoba.ca (Budi Rahardjo) writes: >I have just downloaded KA9Q's NET program from wuarchive. It is interesting >to see that the compressed (ARCed) and the actual file is almost the same >size : > >NET-0308 ARC 181175 >NET EXE 181144 That's because Phil Karn has compressed NET.EXE with PKLITE. I put NET.EXE into the ARC with the "s" (store as-is) command so that when you extract the program you will have a CRC check so you can be assured that it's not corrupted by transmission errors. If I stored NET.EXE as-is on SIMTEL20 there would be no way for you to know if it was ok since no CRC check is done by MS-DOS when loading the file. Why did I use ARC instead of ZIP? Because ARC is available on SIMTEL20's operating system and ZIP isn't. I would have had to download the file to my PC, ZIP it and then upload it to SIMTEL20. If you prefer to get KA9Q directly from the source, it's on thumper.bellcore.com in the pub/ka9q/nos directory. Keith -- Keith Petersen Maintainer of SIMTEL20's MSDOS, MISC & CP/M archives [IP address 26.2.0.74] Internet: w8sdz@WSMR-SIMTEL20.Army.Mil or w8sdz@vela.acs.oakland.edu Uucp: uunet!umich!vela!w8sdz BITNET: w8sdz@OAKLAND
c60b-1eq@web-1h.berkeley.edu (Noam Mendelson) (04/13/91)
In article <1991Apr13.031548.2003@ccu.umanitoba.ca> rahardj@ccu.umanitoba.ca (Budi Rahardjo) writes: >I have just downloaded KA9Q's NET program from wuarchive. It is interesting >to see that the compressed (ARCed) and the actual file is almost the same >size : >NET-0308 ARC 181175 >NET EXE 181144 >Maybe it's better to store the exe version. (save extract time :-) That's not very odd. NET.EXE was most likely compressed by an EXE file compressor, such as PKLITE, DIET, or LZEXE. Given that ARC is a very inefficient compression method, it failed to improve on the compression. However, even some very efficient compression programs (LHa, for example) only yield an additional % or two compression on the compressed EXE file. -- +==========================================================================+ | Noam Mendelson ..!agate!ucbvax!web!c60b-1eq | "I haven't lost my mind, | | c60b-1eq@web.Berkeley.EDU | it's backed up on tape | | University of California at Berkeley | somewhere." |