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Old 09 September 2006, 12:45   #1
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7-zip 4.42

7-Zip is a file archiver with high compression ratio.

The main features of 7-Zip:
  • High compression ratio in new 7z format with LZMA compression
  • Supported formats:
    • Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
    • Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB and NSIS
  • Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.
  • For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10% better than ratio provided by PKZip and WinZip
  • Powerful command line version
  • Etc....
On the archive you'll find 7za which the standalone version of 7z (not the plugin-based one). 7za handles less archive formats than 7z, but does not need any others... Theres an Amiga-README file into the archive which you should read before using the program!...

For detailed information about the tool, check out the official website at www.7-zip.org

Download: p7zip-4.42.lha (1791Kb)

Source: http://amiga.sourceforge.net/
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Old 09 September 2006, 13:32   #2

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It's claimed to run on OS 3.x. Anyone got any reports? Memory usage? Time? I'm curious how viable it is for day to day use on a classic amiga...
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Old 10 September 2006, 12:04   #3
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The readme file indicates it is memory hungry........about 70Mb was reportedly required to extract one archive listed. Not surprising as it looks to be a quick 'n' dirty port that requires use of ixemul. Probably an archiver for high-end Amigas with lotsa memory. I'll give it a whirl on my A4000/060 when I get time and report back.
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Old 10 September 2006, 13:06   #4
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it could be nice to have this on the amiga... only x-arc IMHO is a nice gui archiver . I will give it a shot when my 4k is up and running...
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Old 10 September 2006, 15:52   #5
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I'm testing this version with the author and I think sooner or later 7-zip will work well on aos3.x with a new release.

work better with ixemul.library 48.2 than with ixemul.library 49.17 for 68x (also on same site).
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Old 10 September 2006, 19:42   #6

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7Zip seems to be a very efficient packer, cheers to anyone who spreads it across platforms!
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Old 10 September 2006, 23:53   #7
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I'm amazed anyone's ported this to the Amiga!

But not surprised regarding the memory usage... 7z is a great and efficient format - I use it lots on PCs where, of course, using 70Mb+ RAM as a buffer during compression isn't a problem.

I guess I won't be trying this on my A1200 as it only has 32Mb!!!

- Ali
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Old 17 September 2006, 08:37   #8
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ixemul 49.17:

1. just a note, in case you've noticed it already, 7za can't work with this ixemul version because vfork() is needed which broken with here.

hence ixemul 49.17 can work with programs which do not uses vfork(), sing

2. if a DOS path isnt working just type the same path in UNIX format and it should work.

- ixemul.48.x work with 7zip.
- without path, 7zip work (all in ram: for example) or maybe button on dopus4 (not tested).
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Old 17 September 2006, 17:04   #9

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Looks like the port is a few steps from double-click goodness yet
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Old 23 September 2006, 08:15   #10
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better than tar.bz2?
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Old 25 September 2006, 21:37   #11
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Imho much better than .tar.bz2 , but note that it doesn't keep permissions on some os ( e.g. unixlike os. ), so sometimes is better to tar ( without compression ) and then to 7z the tarball
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