Currently the last release of Ubuntu is 19.10 (Eoan Ermine).

We can upgrade from the standard release, or from the LTS. To be sure to upgrade in the release-upgrades configuration file we must check the last line. This line must be:

Prompt=normal

We can update this file with the commands:

$ sudo su

# sed -i -E ‘s/Prompt=(never|lts)/Prompt=normal/g’ “/etc/update-manager/release-upgrades”

Alternatively you have to edit the release-upgrades file in the /etc/update-manager folder, adding the right line.

Then execute:

# apt-get update

# apt-get upgrade

# apt-get dist-upgrade

# do-release-upgrade

Answer yes to the request of upgrade. You will be informed with a prompt about the necessary time.

VoilĂ  tout !

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