> I was wondering if there is a way to see how big an archive would be if I were
>to tar an entire disk. What I want to do is pull the harddrive out of one box
Won't it be the same size? At least it's a good approximation, with the
difference that it will be one single file, and not many little files->
block size of the filesystem. Tar is only for archiving. Gzip makes the
compression. Maybe you shouldn't use gzip if it's your only backup. It's easier
to get files from the archiv if it's not compressed.
If you are wondering about gzip-ed size, I would play with something like the
following:
tar cvfz - DirName | dd of=/dev/null
It will give you a result like this:
640+0 records in
640+0 records out
Record size-> and there you have the size of the file. But it doesn't make much
sense imho because you might as well just start archiving, and if the space is
not enough, rm.
Ferenc
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