[sbelskie]

Yea, in that case I just search “bash operators” and hope to find a page that includes an example of the one I’m trying to understand.

[marcosdumay]

I think this one is called a "type of quote", not "operator".

At least Bash has a very complete man-page, you can just search for `$(` there and you'll find it. But the Bash symbols all have different functions, there are (very few) operators, quotes, variables, and probably more than I can remember.