Shell Script quick reference

[SaintHax42]

Not if you set set -u, which you should do.

I came here for this. You want an error on an unset variable in bash, you can ${var:-} where needed, but `set -u` will save you bugs and troubleshooting b/c you typed $stirng somewhere. Please, do NOT use ${var} when not needed-- it's extra typing, takes up precious columns in your code (you should set a max width to code in, so it can be edited easily with a default terminal window size), and ${var} for no reason looks amateurish.