/members-area/personalblogs/b/nexgen-flight-simuator/posts/howto-debian-9-5-post-installOk, you just installed Debian 9.5 with the Cinnamon Desktop. Now, what you can run a command with sudo it bitches and says your not in the sudoers file. So let's fix that first:open a root terminal, so and it should look like this:harrison@...en-USTelligent Community 12