“Sign in to confirm that you’re not a bot” usually means your IP is (temporarily) blacklisted by the video server. You can try using a VPN or tor.

A video on youtube…

Explained here: https://www.cyberciti.biz/faq/understanding-bash-fork-bomb

This is just a forkbomb that will overload your system.

… and when you tweet or x (or whatever it’s called now) sh*t about elon your car drives away

totally a security measurement

crossposted from r/memes xD

I can’t tell you why but it seems like plasma crashed (-> screen black and all opened programs gone) and restarted (-> came back). That’s what I can tell from your description. In your logs you can look for errors from plasma, kwin and maybe something with the gpu driver.

In theory, you could make a XMPP bot that can do all these things. Status information and executing simple commands shouldn’t be that hard but interactive commands might need a custom wrapper.