bigpipe commands, How to gather what you see in the gui through the command line

As Steve says, TMSH is the way to go. You can see anything in the shell that you can see in the GUI (and usually more) by using TMSH. The trick is, however, that every command is different and highly dependent on what you're looking for. I would recommend referencing the TMSH guide for 10.x to get you started.

Manual: Traffic Management Shell (tmsh) Reference Guide