https://www.youtube.com/watch?v=WWVt07ChexQ
Some things I have others try it out or look it up elsewhere. Just in case it’s something to crash my devices! Long ago, in my early days of being a systems engineer at the journeyman level, I was working on a large IBM mainframe servicing thousands of customers. So I’m trying to remember some console commands before applying some changed systems code, and a co-worker tells me to enter “quiesce”. As operators watched, I entered it and to my horror it stopped everything in it’s tracks - batch programming, telecommunications, payroll, everything. Co-worker laughing, and I caught heat for disrupting uptime. After that, I made sure I knew exactly what each command would do.