“$” might symbolize dollars to many of you, but for bash users it’s the holy grail for retrieving stored data. Speaking of which, do you know what’s the common place to store a piece of data? A variable. Variable The name itself incurs that variable is something that could be varied. So is it like a chameleon that changes colors all the time? Not precisely, if you remember from the intro its a common place to store a piece of data.