Once in a while I want to add my user to a group and then right away make use of that group.
Unfortunately, in general Unix kind of forces you to re-log in for the new group to be attached to your account.
However, a command has been added, a while back, to do just that on the fly. Not something you would want to use in a script, but at least, it works for me when doing a few things here and there.
In my case, I wanted to run QEMU, which I hadn't done in a while, and the system told me that it could not open the KVM, the error: kvm permission denied.
The problem was that I was not part ...