Quais os principais comandos do Entropy para mantermos nosso Sabayon sempre impecável?

Using Entropy to upgrade all installed packages
Now that you have learned about the Entropy package manager, let's get our package list for the package manager current. You will have to be root to use the commands, so open a terminal and enter su with the root password and, if you did it correctly, your prompt will change to a hash symbol (#) to show you are now logged in as the root user. DO NOT use sudo.

# equo update
If you run into problems with that then try:

# equo update --force
Next, as mentioned in the section above, it is a good idea to optimize the sorting of mirrors so that all package upgrades will be downloaded as quickly as possible:

# equo repo mirrorsort sabayon-weekly
Once you have that completed it is vital to get Entropy upgraded to the latest version before doing a full system upgrade. Upgrade will bring your system to current development.

# equo install sys-apps/entropy rigo equo --relaxed
# equo conf update
Once the Entropy code is upgraded to the latest version, fully upgrade the rest of your system with these two commands:

# equo update
# equo upgrade --ask
Follow what is happening on the screen, as Entropy will show you what it is going to do and ask for confirmations.

The 'equo update' command will update the database on your PC with the latest information on packages available in the Entropy repositories;
the 'equo upgrade' command will download from the repositories the binary files for new versions of packages installed on your PC and then install the new versions of those packages.
Time of process depends on how many packages, bandwidth and hardware. After it is done, make sure to:

# equo conf update
You will want to make your selection but you really should get to know your config files as they will change your system. More than likely most will select -5. I always look over the config files as I don't want some of my configs getting overwritten.

The final step is to run the following commands, checking for missing dependencies and stability:

# equo deptest
# equo libtest
After this has finished, reboot and enjoy your freshly installed fully updated Sabayon.