All non-trivial Bash scripts need to make decisions. The Bash if statement lets your Linux script ask questions and, depending on the answer, run different sections of code. Here’s how they work.
Bugs and typos in Linux Bash scripts can do dire things when the script is run. Here are some ways to check the syntax of your scripts before you even run them.
If a Linux Bash script relies on certain files or directories being present, it can’t just assume they do. It needs to check that they’re definitely present. Here’s how to do that.
The Bash printf command lets you write to a Linux terminal window with finer control and more formatting options than the echo command provides. Even printf ‘s odd quirks can be useful.