Being a long time Microsoft Windows user, I was surprised to find out a fun feature of Apple MacOS terminal command--ping.
If you are not familiar with the ubiquitous tool, on most systems it is a way to send a simple ICMP ECHO_REQUEST packet to network hosts. In plain English, it means you can send a small network message to a node on the network and it will reply back. Depending on the length of time between the send and the reply you can figure out rough network performance.
ping -t 192.168.1.1
Note: the -t makes the command continuous. This means that it will continue to ping over and over again--never stopping vs the default of a three ping count.
On a Mac, you have a couple of extra options.
By default, every ping on a Mac is continuous.
You can ping a node on the network and have it make an audible beep every time it gets a successful reply. This is very useful if you want to verify a machine is still up and running while doing other tasks.
ping -a 192.168.1.1
ping -A 192.168.1.1
Depending on which system you are using, there are many other options you can run while using ping but these are a couple I find useful while using a Mac.
Drop me a line in the comments if this is useful to you or if you have any questions,
Brian Olsen @sagelikebrian