I learned that the command: cd . will put you right back into the the previous directory or file you were just working in :-) pretty neat
I think you mean cd -, right? :)
In a similar manner, git checkout - will switch your branch to the previous one. Very useful.
Today I re-learned the procedure to enable remote desktop session without having to deal with vnc-server and its config nuances. Basically, add the appropriate port on the firewall's list of good ports for the currently active zone, enable Screen Sharing by setting up a simple password for it and activating whatever network is marked available in the options box (doesn't matter if only wifi is available and all you wanted was connections over your Ethernet LAN, just put the slider to ON) and disable encrypted remote sessions (so your non- Linux clients can have remote desktop sessions on your RHEL server).
Cockpit got new links for controlling virtual machines and containers, which is a welcomed improvement!
Today I learned that you could write your own virtualization client in Swift on a Mac with Apple Silicon. Maybe I'll figure out how to extract a kernel and a RAM disk image out of an ISO (as the procedure requires) and virtualize RHEL 8 on my new Mac.