At a basic level, parameter expansion means changing Bash syntax into a value—expanding it. For example: echo "$foo" This simple variable turns into its assigned value. However, ...

Most developers prefer Linux over other operating systems such as Windows. But, though it’s clearly the preferred choice, most folks will admit that it’s not exactly an ideal OS to use for beginners ...

For many users who get started with the command line in Linux, there’s a good chance they’re using Bourne Again Shell, or Bash. Bash is the default shell on Mac OS X, and Windows users can use Bash ...