

I’m addition to tldr which someone else suggested, there’s also the cheat command. It’s pretty easy to add to it’s cheat sheets, if you have custom commands, or want to keep a specific example. I’ve never kept a physical cheat sheet… They’re just too inconvenient and my fingers are probably already at the keyboard.

PiHole 4b powering my home DNS. Been running for ~4 years as of next month (and still on the original SD card I installed it to!). 100% recommend.