Linked by Thom Holwerda on Sat 6th Oct 2007 23:12 UTC, submitted by Kaj de Vos
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Apparently my version of 7z also accepts the 0-9 parameter... I never noticed. And yes, it appears to default to 9.
bzip2 is good for being the best compressor commonly installed on Linux systems. You rarely find rzip or rar there. And actually, rar did worse than bzip2 on my little test, but I think that was with non-optimal settings.




Member since:
2005-07-24
DigitalAxis,
No. These days you have a choice with lzma. The package I use accepts switches -1 through -9, like gzip. At -1, the compression is about like bzip2 and with comparable speed. -7 is the default and the sweet spot, regarding both compression speed and memory usage vs compression effectiveness.
-9 is slower, yes. But it gets better results.
Gzip is still good for when you need speed. Lzop is great for when you need *blazing* speed with, still, remarkably effective compression. (Well... all things considered.)
Bzip2 is still good for... I'm not sure what. But it's popular. ;-)
lzma has been hampered by implementations with incredibly obtuse user interfaces, unfortunately. I just recently extricated myself from that mess. These days I just use it like gzip.
Edited 2007-10-07 22:41