It looks like old-fashioned Basic at first. But the more you dig in, the odder it gets. The command line is more akin to a Python REPL. You type things, and they happen. It took a while to figure ...

There are dozens of command line codes, but we're going to cover the top few you need to perform the most basic, most common ... adding /flushdns to the end can clear a multitude of problems.