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It’s recommended to actually wait for the first point release. You have to wait until 18.04.1 is launched. do-release-upgrade -d // The -d is required. The system will prompt you for a password sudo apt update sudo apt upgrade // Check for errors. sudo apt update sudo apt upgrade // Prepare the 16.04 system for release-upgrade do-release-upgrade // 16.04 to 18.04. What this means is that if you’re currently using 16.04.5, you can’t upgrade to 18.04. A backup or VM snapshot or VM clone before beginning is wise.
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However, when a new LTS version appears, you cannot upgrade to it until its first point release. For example, it might update Ubuntu 16.04 to Ubuntu 18.04. Normally, the script will upgrade from one stable release (or LTS – Long-Term Support) to the next. It’s actually a script written in the Python programming language. Now enable your virtual host file with the a2ensite command. Next, run a dry run to see if any errors are present before enabling. The utility to upgrade Ubuntu from a previous version to an upgraded version is called do-release-upgrade. First, disable the existing default installed server block file nf with the a2dissite command: sudo a2dissite nf.
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You can also more easily spot potential errors if they arise.Īlso read: How to Update and Upgrade Ubuntu Offline do-release-upgrade Command Line Switch “-d” Consequently, you might prefer this method if you want to see the details of the upgrade as it happens. Most command line utilities output a lot of text while they work. The command line interface usually lets you see more about what is going on. However, this is not the only scenario where this is useful. In this case you are forced to use the command line to upgrade Ubuntu. But there are times when you cannot use a graphical utility – for example, on servers you don’t have access to a graphical interface.