http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=1#doc_chap3
======================== <copy&paste>=====================
Updating your System
To keep your system in perfect shape (and not to mention install the
latest security updates) you need to update your system regularly. Since
Portage only checks the ebuilds in your Portage tree you first have to
update your Portage tree.
Code Listing 2: Updating the Portage tree
# emerge --sync
When your Portage tree is updated, you can update your system with
emerge --update world
...
Code Listing 16: Removing orphaned dependencies
# emerge --update --deep --newuse world
# emerge --depclean
# revdep-rebuild
============================================================
Could some of you, gentoo-wizards, be kind enough and explain, what
is wrong in doing the things the way gentoo handbook recommends it?
Without offensive language, if I may ask...
Jarry is quite arrogant (why in the hell should we people use offensive
language with you, unless you give us occasion to do it? and, hey, a bit
of self-irony should help), but I was wondering too why all this fuss
about updating regularly the system.
I update by hand and I always see what's going on with the help of
--pretend, to see if there's some nasty issue. But I --deep --update my
desktop about twice a week and nothing bad is happening here.
m.
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