12.4 Performing Updates
Over the lifetime of both the base operating system and the installed software packages, multiple updates will be issued to resolve problems and add functionality. To manually download and install any pending updates from the command-line, the first step is to update the package information stored on the local system using apt with the update option:
# apt update
Once the package information has been updated, the upgrade can be performed. This will download any updates for currently installed packages from the repositories configured in the sources.list file and install them on the system:
# apt upgrade
As an alternative to the command-line, the system may be updated using the Software & Updates GNOME desktop app. If updates are available the dialog shown in Figure 12-5 will appear providing the option to view information about the available updates and to perform the upgrade:
Figure 12-5
