September 15, 2010

Why to concatenate into tarballs when compressing?

I couldn't find the exact reasons for concatenate files into a tarball while compressing. Could it be speed, redundancy or just for the sake of sequential I/O devices? I'd like to know if the other programs like zip, rar and 7zip do the same process silently. And what would be the consequences for compressing with gz and bz2 without concatenating, if it's possible.

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