This article explains the sleep command in Bash/Shell scripts and how and why you might use it. The sleep command in Bash (and other Linux Shells) pauses execution for a specified amount of time – halting the script for a set number of seconds, minutes, hours, etc. Why Pause Execution? Why… Read More »Using the ‘sleep’ Function in Bash Scripts, with Examples
Linux supports multiple users and groups, allowing access to be granted to only the resources required. Here’s how to list users, groups, and group membership. Separating users and groups ensures that different people can’t accidentally interfere with each other’s files and ensures system security by… Read More »How to List Users and Groups in Linux, With Examples
This article will show you how to change the hostname for your Linux device (Debian, Arch, Ubuntu, or RedHat). The methods below should work for the vast majority of current and obsolete Linux Distributions. What is the Hostname? The hostname of a device on the network is the… Read More »How to Change the Hostname in Linux (Debian, Ubuntu, Arch, RedHat)
This was only meant to be a two-parter, but I couldn’t leave well enough alone. Raspberry Pi & Python Powered Tank Part III is an update with better Python code and an improved design. I’ve gone back to fix the biggest issues that were left… Read More »Raspberry Pi & Python Powered Tank Part III: More Tank
This article will show you to build a DIY soldering extraction fan (to ventilate fumes) using an Arduino and a temperature sensor to activate the fan when the soldering iron is hot. Before you read this, why not open up my other projects in some… Read More »DIY Arduino Powered Soldering Extraction Fan
If you’re the sort of person who has to check the stove is off before leaving the house, then recheck it because you can’t remember if you checked it (and maybe even turn around at the front gate, unlock the door, go back inside and… Read More »DIY Arduino Powered Electronic Morning Checklist
I stumbled across a thread about terrible programming mistakes and found this: https://github.com/MrMEEE/bumblebee-Old-and-abbandoned/commit/a047be85247755cdbe0acce6f1dafc8beb84f2ac Which contains the line: rm -rf /foo-bar-usr /lib/nvidia-current/xorg/xorg Note – I’ve added foo-bar- to the string so that if you try to run it, it won’t do the thing I’m warning about –even having… Read More »Why You Should Wrap File Paths in Strings in Your Shell Scripts
This tutorial explains how to pass command-line arguments to your bash scripts. There are many examples included to help get you started. Bash/Shell scripts are a great way to automate your Linux workflow and speed up your workday so you can leave the office early… Read More »Command Line Arguments in Shell/Bash Scripts [Tutorial]
Package managers like apt are one of the big selling points of Linux operating systems and Ubuntu – a vast curated collection of software that can do just about anything, available with a few keypresses. A vetted and (usually) reliable source of great software to meet any task. However, when something… Read More »How To Fix Broken Packages in Ubuntu [Tutorial]
This tutorial covers setting up a full LAMP (Linux, Apache, MySQL, PHP) web stack, including HTTP server, MySQL database, and PHP for app logic. This is commonly called a LAMP server – Linux, Apache, MySQL, PHP. Linux rules the web server world – the operating system powers the vast majority of web… Read More »Setting up a LAMP Stack on Ubuntu 20.04 (And Raspberry Pi)