Better bash in 15 minutes
The author uses ${} a lot more than I see in most code. Is it helpful to always use the ${var} syntax instead of simply writing $var?<p>I can see universal application of ${} being advantageous in avoiding accidental "$foo_bar where you meant ${foo}_bar" situations, and ${} makes it clearer that you're referencing a variable. The only cost would seem to be more typing.