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I recently took over a 16.04Ubuntu computer, and the interface operation is very uncomfortable. I am considering upgrading to 18.04. The following is a summary of experience
Specific steps
1. First, you need to completely uninstall ROS
ROS has strict requirements on the Ubuntu version, the code is as follows:
sudo apt-get purge ros-*
sudo apt-get autoremove
2. Then, use the following command to update the current system
sudo apt-get update
sudo apt-get upgrade
3. Finally, upgrade the system
sudo do-release-upgrade
Tips： 升级过程还是时间比较长的。