A site for Linux lovers worldwide. For newbies, system engineers, administrators, and everybody in between. We cover all things Linux, plus various programming languages, including Python, Javascript, and PHP.
View our featured tutorials and projects in the slider below or scroll down to see all recent articles.
Bash/Shell scripts usually run sequentially until all of the code in the file has been executed. The exit command will exit the script before this based on conditions of your choosing. exit Command Syntax Here’s the syntax for the exit command, which can be used in Bash/Shell scripts: exit… Read More »Exiting Bash Scripts with the exit Command, With Examples
This article will explain Linux Distributions, Ubuntu, and Arch Linux, and give you some information to help choose between them. Linux Distributions The Linux Kernel is the core of the Linux Operating System – it handles the basic operations and interfaces with the computer hardware allowing… Read More »Arch Linux vs Ubuntu Linux – Which is To Choose?
We’ve covered using variables in Bash previously – this article will explain Bash array variables and provide some example usage. What is an Array An array is a type of variable that can hold multiple values. It’s a list of values you can loop through and perform operations… Read More »Array Variables in Bash, How to Use, With Examples
isNaN() is a JavaScript function that will tell you whether a value is equal to NaN – or Not a Number. It can be used to determine whether the result of a mathematical operation is valid or not. Here’s how to use it. What is NaN? NaN is a special value… Read More »Using The isNaN() Function in JavaScript, With Examples
This article will explain what the [email protected] is in Bash and Bash/Shell scripting and how and why you might use it. The [email protected] variable is a special variable in Bash which holds the value of all of the command line arguments/parameters passed to the script. Command Line Arguments/Parameters in Bash… Read More »What is [email protected] (Command Line Arguments) In Bash/Linux?
There are one of two things you might be looking for – merging two MySQL tables, or the MERGE TABLE syntax – this article explains both, with examples. Merging Tables in MySQL (Moving Data From One Table Into Another) A note before I get to the code… Read More »Merge Tables in MySQL (UNION/MERGE TABLES) – Tutorial
Running out of disk space? Here’s how to find large files in Ubuntu (and other Linux distributions) without any fuss using the du and ncdu commands. The du Command The du (Disk Usage) command does what it says it does – tells you about the disk usage of files in a given directory. du Command… Read More »Find Large Files in Ubuntu/Linux (du/ncdu), With Examples
This is a quick “now you know” article showing you how to validate your PHP code using PHP from the command line instead of using an online PHP validator. Online PHP Validators So, you’ve got some PHP code, and you want to check that it’s… Read More »PHP Validator – Safely Checking Your PHP Code Syntax Quickly and Easily
If you’ve recently updated your network configuration or just can’t get things to connect, you may need to restart the networking services on your Ubuntu System to get things back up and running. Restarting the network is particularly useful if you’re recently updated your WiFi… Read More »Restarting the Network in Ubuntu [Instructions/Example]
The diff command is an easy way to compare files or directories from the Linux shell. This article will show you how to use it, with some examples of common usage. The diff command performs a line-by-line comparison of two files or directories and outputs the differences between… Read More »Linux diff – How to Show Differences and Make Patches, With Examples
