If you're writing a Bash script, you will invariably need to pass values to it—aka arguments or positional parameters. Bash's approach is a little clunky, but it works. Examples are the easiest way to ...

Variables often look like $var, but they also look like $1, $*, $? and $$. Let's take a look at what all these $ values can tell you. A lot of important values are ...

Jack Wallen shows you how to pass environment variables to Docker containers for a more efficient development process. Did you know you can pass environment variables from your host to Docker ...