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Upgrade Ubuntu Linux using command line

To upgrade Ubuntu Linux open up a terminal and type:

do-release-upgrade

The old way using apt isn’t needed in Ubuntu to upgrade the system. dist-upgrade has been superseded in Ubuntu by full-upgrade.

The do-release-upgrade command can be run as an user with admin rights without sudo. The user password will be asked when starting the command. The system will then make different checks before the upgrade starts. If using SSH an additional port will be opened on port 1022 that can be used if the ordinary SSH-tunnel are broken during the update.

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