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Perform System Updates

Updating your system frequently is the single biggest security precaution you can take for any operating system. Software updates range from critical vulnerability patches to minor bug fixes and many software vulnerabilities are actually patched by the time they become public. Updating also provides you with the latest software versions available for your distribution.

apt update && apt upgrade
foobar When updating some packages, you may be prompted to use updated configuration files. If prompted, it is typically safer to keep the locally installed version.

This includes CentOS Stream 8 (and above), CentOS 8, other RHEL derivatives (including AlmaLinux 8 and Rocky Linux 8), and Fedora.

dnf upgrade
apt update && apt upgrade
Note
When updating some packages, you may be prompted to use updated configuration files. If prompted, it is typically safer to keep the locally installed version.
apk update && apk upgrade
pacman -Syu
yum update
emaint sync -a

After running a sync, it may end with a message that you should upgrade Portage using a --oneshot emerge command. If so, run the Portage update. Then update the rest of the system:

emerge -uDU --keep-going --with-bdeps=y @world
Note
Standalone note.

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