What is "know what's going on"

Usage examples of "know what's going on".

But I expect you want to know what's going on, and I'll answer a few questions.

The stupidest Thull in the world will know what's going on if he sees a forest of ship masts coming down the river toward him.

I quite grant--I look at the faces of the clerks in my own office, and observe them to be dull, but I don't know what's going on beneath.

You make it your business to know what's going on aboard this station.

I don't exactly know what's going on, but if you're covering up for Lisutaris, the government is going to come down on you like a bad spell.

And just about everyone else in the provisional government, even those who aren't a part of it, know what's going on and don't want to get their hands dirty.