10.5.3. Update regularly
Its ability to adapt quickly in an ever changing environment is
what makes Linux thrive. But it also creates a possibility that
security updates have been released even while you are installing a
brand new version, so the first thing you should do (and this goes
for about any OS you can think of) after installing is getting the
updates as soon as possible. After that, update all the
packages you use regularly.
Some updates may require new configuration files, and old files
may be replaced. Check the documentation, and ensure that
everything runs normal after updating.
Most Linux distributions provide mailing list services for
security update announcements, and tools for applying updates to
the system. General Linux only security issues are reported among
Updating is an ongoing process, so it should be an almost daily