I agree you need to use it daily but disagree that an Ubuntu desktop provides any real insight. Here's some BASIC questions an ubuntu user might never encounte

I agree you need to use it daily but disagree that an Ubuntu desktop provides any real insight. Here's some BASIC questions an ubuntu user might never encounter: Which processes are currently hogging the CPU? Which ports are currently open? How do you setup a remote git repo and/or add a user for limited ssh? How do you increase an existing swap part without locking the CPU during write at peak loads? How do you exclude/include packages from being autoupdated on apt update? How do you ensure opaque crontabs aren't silently failing? My advice: Setup a Linux server on aws or whatever for a paying customer with medium load. Only the stress of respondong to actual downtime will teach you anything useful.