Daily maintenance
Update the Gentoo repository
Gentoo uses rsync to update the repository. Portage proves a front-end for this:
root ~ # emerge --sync
When the connections are restricted by administrators or firewalls, Gentoo repository can be updated by fetching the latest snapshot using:
root ~ # emerge-webrsync
emerge-webrsync also guarantees the signed snapshots are pulled.
Update the system
Gentoo system consists of key applications selected by the users, named @world. @world is updated using:
root ~ # emerge --update --ask @world
To update the dependencies of those packages as well, add the --deep option:
root ~ # emerge --update --deep @world
To update the compile dependencies, add --with-bdeps=y:
root ~ # emerge --update --deep --with-bdeps=y @world
To apply new USE flags, add --newuse:
root ~ # emerge --update --deep --with-bdeps=y --newuse @world
Portage tools
Query the USE flags
Query the flags of <package>:
equery uses <package>
Regenerate world file
World file is located at /var/lib/portage/world.
root ~ # regenworld
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