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Let us examine all commands step by step to upgrade Debian 9 Stretch to Debian 10 Buster safety running in the cloud or bare metal environment.
Verify that everything is working correctly. Reboot the Linux system so that you can boot into Debian 10 Buster.
Finally, update Debian 9 to Debian 10 buster by running:. Prepare for the operating system upgrade, run:. Update the packages index on Debian Linux, run:. Edit the file /etc/apt/sources.list using a text editor and replace each instance of stretch with buster. Update existing packages and reboot the Debian 9.x system.
AppArmor is installed and enabled by default.Updated desktop environments such as Cinnamon 3.8, GNOME 3.30, KDE Plasma 5.14, LXDE 0.99.2, LXQt 0.14, MATE 1.20, Xfce 4.12.