On Aug 23, 2009, at 7:14 PM, Karl Vogel wrote:
Touching a timestamp file and backing up stuff newer than that works
fine for things you modify, but I frequently copy over source
tarballs
and the timestamp method won't work for those.
This is one of the several reasons that I use rsync (via rsnapshot).
At each increment, it backs up the minimum that is need. With the
cost of having a complete backup which duplicates what you would find
in a reinstall, you have a complete system.
Suppose you accidently trash something from the original
installation. It may be easier to restore it from your backups than
going to original installation media. Disk space is cheap, so having
a complete back-up (under most circumstances) makes sense. With --
link-dest you can maintain many snapshots with the minimal of copying,
transmitting, and writing files.
Of course everyone's back up needs are different, and what works for
me isn't necessarily the best for others. But if you haven't looked
at rsnapshot, I'd recommend that you do before writing your own
scripts. Even if you don't use rsnapshot itself, look at what it does
with rsync.
Cheers,
-j
--
Jeffrey Goldberg http://www.goldmark.org/jeff/
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