This is another one where I get a mental blank. I know there is a way to import a new gpg key for apt, but I always have to look it up.
sudo apt-key adv --keyserver keys.gnupg.net --recv 886DDD89
And that is all there is to it. (Substitute your favourite keyserver and the correct key, obviously).
Wireshark is a great and powerful tool, but for too long I’ve just been starting it as root, and ignoring the nag-screen that Debian keeps throwing at me. But it’s dead simple to do it the right way without root privileges.
It’s embarrassing. I just have a mental block when it comes to adding an existing user to an existing group.
sudo adduser user group
or to remove a user from a group
sudo deluser user group