What is the sub input terminal that shows up when I type the character \ or ` (backtick) into a Linux command line? It shows up with what I assume is a prompt that contains a single ">" character. (see image below)
It almost appears to be a scripting terminal (like python's ">>>").
I tried asking google but the question is hard to explain.
It is just waiting for a closing backtick.
You can get the output from a commando using those backticks and assign it to a variable. If you would do
myvar=`ls`, then the output of ls would be assigned to myvar.
You can use
myvar=$(ls) likewise, and some suggest it is even more modern.