[gentoo-amd64] backups and world updates

[Mark]

Thanks to everyone who helped me get my system back after a couple of
world update snafus. Now of course I'm a little gun-shy about using
options like emerge --update world. So what's my best bet to keep my
system up to date, while protecting it from my own lack of
understanding of updating config files?

Here's what I'm intending to do so far:

1. Prior to running any large system update, back up /etc to another location
2. use dispatch-conf instead of etc-update

Can anyone make any other suggestions? Which emerge options are best
for full system updates? Thanks
-- 
Mark
[unwieldy legal disclaimer would go here - feel free to type your own]

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