12/10/2023 0 Comments Add user to sudo groupTo test that the new sudo permissions are working, first use the su command to switch. Adding an existing user to the sudo group. Here are the details of the three different methods. By default on Ubuntu, all members of the sudo group have full sudo privileges. On Ubuntu 20.04, we will focus on three different ways to add a user as sudo : add it to the sudo group, to the sudoers file or using the graphical interface. This pkexec method works (on desktop systems) because Ubuntu systems with a GUI installed have two separate mechanisms for administrators to perform actions as root: sudo, and PolicyKit. Use the usermod command to add the user to the sudo group: usermod-aG sudo sammy Again, be sure to replace sammy with the username you just added. Ubuntu 12.04 and later should have this (even if they also have the above lines because they were upgraded from an earlier release): # Allow members of group sudo to execute any command Ubuntu systems before 12.04, or those that were upgraded from a version before 12.04, should have this: # Members of the admin group may gain root privileges It is possible to add a user to the sudo group without having to mess around with the /etc/sudoers file. Then just edit the sudoers file to add whatever entries you need. If you're in the admin group (or the sudo group starting with Ubuntu 12.04) but that group isn't configured in /etc/sudoers to be able to run commands as root with sudo, you can fix that problem the same way you'd fix a broken sudoers file: pkexec visudo
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