> Is my current strategy sufficient?
Probably not, unless you don't care to re-install your machine(s) in case you
broke the operating system.
> Should I be backing up other directories?
see above
> Should I just back up everything from / on down?
Definitely not. I somehow recall that reading some files in /proc can be
dangerous. In any case, there's no need to backup that one, since it's
"created" by the kernel.
Here's my list of excluded directories:
/boot - I'd recompile the kernel from scratch
/dev - I use devfs; back it up when you don't
/lost+found - ext2/3-specific
/mnt - external mounted stuff
/proc
/root - there should be nothing in there anyway
/tmp
/usr/portage - Gentoo-specific
/usr/tmp
/var/lock - run-time lock files
/var/log - you may want to backup these
/var/run - run-time state data
/var/state - same
/var/tmp
--
Maik Schreiber * http://www.blizzy.de
GPG public key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1F11D713
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