Bash does not support multi-dimensional arrays, but there is a way to imitate this functionality, if you absolutely have to. As a quick example, here's...

Asciinema is an awesome tool for recording your console sessions. It's great for documenting processes and, in general, showing people how shit works: one...

This is not an entirely proper way to benchmark a DNS server, but, in a pinch, it should give you some idea of its...