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- Path: sparky!uunet!paladin.american.edu!howland.reston.ans.net!zaphod.mps.ohio-state.edu!caen!uvaarpa!murdoch!holmes.acc.Virginia.EDU!dtl8v
- From: dtl8v@holmes.acc.Virginia.EDU (Heracleitus)
- Subject: Re: pkzip 2.04c / unzip v5.0 compatibility
- Message-ID: <1993Jan8.142251.17607@murdoch.acc.Virginia.EDU>
- Sender: usenet@murdoch.acc.Virginia.EDU
- Organization: University of Virginia
- References: <1ied29INN37p@butler.cc.tut.fi> <1if4d6INNpgs@gap.caltech.edu>
- Date: Fri, 8 Jan 1993 14:22:51 GMT
- Lines: 21
-
-
- I thought PKZip's and Info-Zip's compression engines were identical,
- but maybe PKWare sacrificed some compression efficiency for speed, as
- here as some comparative results for compressing the same set of
- files--the PKZip 2.04c distribution files--with PKZip's normal and
- xtra compression and Info-Zip's normal and xtra (-9) compression:
- . <DIR> 01-05-93 11:02a
- .. <DIR> 01-05-93 11:02a
- PKNORMAL ZIP 174457 01-05-93 11:09a
- PKZEXTRA ZIP 173588 01-05-93 11:12a
- INFONORM ZIP 173386 01-05-93 11:11a
- INFOXTRA ZIP 173088 01-07-93 5:01p
- 6 file(s) 694519 bytes
- Nevertheless, ZIP 2.04c uncompresses all info-zip files, and
- vice-versa (short of problems like the one reported for encrypted
- files).
-
- Doug Lamb
- University of Virginia
- dtl8v@Virginia.EDU
-
-