Yes, that’s the exit code and it’s meant to indicate that the pwd command you just used ran without any errors. An exit code of 0 always indicates that no problems were encountered.

The name of this command always trips up new users at first. When I first started working with Linux, it took me a while for my fingers to remember the command is passwd and not password.

A single .so file might contain information and functions on how to quickly search through the whole computer or perform very complex calculations. Several programs can then call upon that .so ...

By default, the code uses pcd, although you can set up any name you like on the command line. You could even create an alias for cd if you wanted to do that. Why Not Automatic?

Linux never suffers from having too little information. With just a few commands, you can gather all the details you need to understand what's under the hood of your computer.

One of the most valuable utilities offered by Unix and Linux-based systems is the wc command. This versatile command stands for "word count" and offers you a simple, yet powerful way to analyze text ...

Fortunately, if you’re working with Linux, there’s a hand tool that makes using the command line considerably easier: autocompletion. Just type the start of a command name and hit Enter.