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 ...

The printf command offers well-defined behavior following the POSIX standard, which means it works the same way across shells ...

It's easy to add a few lines of text to files on Linux, but there are tools that make it easier to add many lines. There are a number of ways to add text to files on Linux systems without having to ...

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 ...

There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren ...

This guide explains top 10 dangerous Linux commands in simple terms. Learn why they are risky and how beginners should think ...

Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...