The output will be what you expect, it will echo Hello World onto the screen. You can also use echo to view the contents of a variable: As with most Linux commands, there's definitely more that we can ...

Linux might sound scary for first-time Linux users, but actually, it isn’t. Linux is a bunch of open-source Unix operating systems based on Linux Kernel. These operating systems are called Linux ...

In our first tutorial on command line wizardry, we covered simple redirection and the basics of sed, awk, and grep. Today, we’re going to introduce the concepts of simple variable substitution and ...

When Apple announced the release of Mac OS X, many Mac users were stunned: here was a new operating system based on the venerable Unix, which, they feared, would call into question the Mac’s legendary ...