So why didn't I know about --transform? Well, it isn't in the man page, not in the one I have anyway. Looking online, I also found '--strip 1' works:
'--strip' isn't in my man page either.
To use --strip, move the tarball to '/', then:
# tar -z -x --strip=1 -f packagename.tar.gz
Comments:Posted on 24 Feb 2009, 23:00 by labrador
There's a problem with --strip
--strip option works perfectly in most cases. However, some packages, which were not built with programs like new2dir, could include ./ at the beginning of every file. This kind of packages has no problem with the original tar/cp method, but you need --strip 2 rather than --strip 1 to remove package names properly.
Here's an example of such package: http://www.murga-linux.com/puppy/viewtopic.php?t=37419.