Upgrade an existing Ubuntu installation 18.04 LTS to 18.10 Cosmic Cuttlefish
You need an existing Ubuntu 18.04 LTS install with root privileges. The following link will provide you with an information on how to upgrade your current Ubuntu system to 18.04 LTS.
- # – requires given linux commands to be executed with root privileges either directly as a root user or by use of
- $ – requires given linux commands to be executed as a regular non-privileged user
The Ubuntu 18.10 Cosmic Cuttlefish is expected to be releases in mid October 2018.
Current, the most prominent new features to be expected for Ubuntu 18.10 Cosmic Cuttlefish are:
- GNOME 3.30
- New default Communitheme theme
- Faster boot with new compression algorithms
At this time your are only able to upgrade to Ubuntu 18.10 Development Branch. Upgrades to a final release will not be available until few days after the official Ubuntu 18.10 release date.
Before you trigger the upgrade make sure that you are already using the latest Ubuntu 18.04 Bionic Beaver and that it is fully updated.
$ sudo apt update $ sudo apt upgrade $ sudo apt dist-upgrade
Remove all no longer required packages:
$ sudo apt autoremove
Upgrade to Ubuntu 18.10 procedure
How to Upgrade Ubuntu The Debian Way
Change Your Sources
If you’ve selected the traditional Debian path, you’re going to need to change the
/etc/apt/sources.list file and replace the name of your previous release with
cosmic. If you currently run 17.10, first perform upgrade to 18.04 before attempting to upgrade to 18.10 release. Once, if you’re on 18.04, replace every instance of
This process can be automated by using the following
UPGRADE FROM 18.04 TO 18.10 $ sudo sed -i 's/bionic/cosmic/g' /etc/apt/sources.list
Then, look in
/etc/apt/sources.list.d/. Change any files in there the same way. If you end up getting an error when you try to update Ubuntu, use
artful until those repositories are updated.
Ubuntu Update and Ubuntu Upgrade
Now, you can run the Ubuntu dist upgrade. First, update the Apt sources. Then, run the Ubuntu upgrade.
$ sudo apt update && sudo apt -y dist-upgrade
The upgrade should take a bit of time. Chances are, every package on the system will be upgraded. When the Ubuntu upgrade does finish, reboot the system. When the system comes back up, you’ll be running Ubuntu 18.10 Cosmic Cuttlefish!