Things I Learned - 05 Apr 2026
This week, I learned: It’s pretty convenient (on Ubuntu) to be able to move windows around desktops. Apart from the usual Super + Arrow keys to manage windows within a desktop, you can use: Ctrl + Alt + Left/Right Arrow: Move desktops Ctrl + Alt + Shift + Left/Right Arrow: Move window to desktop Super + Shift + Arrow: Move window to another monitor Super + Drag: Drag window from anywhere jq . file.json is an efficient way to pretty-print JSON files in the terminal. (Or jaq . file.json, which is ~30% faster.) GitHub Copilot monthly premium requests were not reset at 12 am UTC How Diffie Hellman Key Exchange Works by Julia Evans is an excellent explanation. Share a random number. A multiplies it by their private key and shares SA. B multiplies it by their private key and shares SB. They multiply the others’ key with their secret key and they get SAB = SBA. Now both of them have the same new secret they can encrypt/decrypt with, but no one else knows, even though they shared everything publicly! This may be one of the best cool uses of math I’ve seen in a long time. Shell tricks I didn’t know: # ALT + . cycles through the last arguments typed mv file.{txt,md} # Move file.txt to file.md ls |& tee file.txt # Pipe both stdout and stderr to tee
