Lesson 1: First Steps with the Command Line 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, ...

There are a number of ways to add text to files on Linux systems without having to open an editor, such as the echo and printf commands. On the other hand, when you need to add A LOT of text, the ...

Syntax echo [Option] [String] Other examples of the echo command are: echo "String": This displays the string within the quotes. echo -e "Learn \nBy \nDoing": Here the ‘-e’ tag allows the echo command ...