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Upgrading Ubuntu
First, fully upgrade your existing installation:
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# apt update
# apt upgrade |
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# apt remove ros-*
# apt autoremove
# rm /etc/apt/sources.list.d/ros-latest.list
# apt update |
Comment out any lines in ~/.bashrc that will try and source a nonexistent ROS installation. |
Then (regardless of ROS installation)Finally, remove unneeded stuff, reboot to make sure the system still boots, then do the release upgrade:
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# apt autoremove
# reboot
# apt do-release-upgrade |