Writing a script to calculate disk usage percentages and send an email alert when a threshold is reached might sound straightforward at first. However, after writing half the script, trying something as simple as result=$a/$b can leave you staring at bash wondering what just happened. No error message. No useful output. Just silence. That exact […]

The cp command in Linux is something most people eventually learn after starting with simple right-click and paste file operations. But once you begin working on Linux servers with no GUI, no mouse, and sometimes hundreds of files that must be moved before a deployment, graphical file management is no longer an option. That is […]

Most programmers write their first Bash if statement using [ ] (or sometimes [[ ]]), run into a space-in-variable bug, spend an hour searching Google for a fix, and eventually hear about [[ ]] as some kind of magic solution without fully understanding how the two actually differ. I was one of those people. I […]

The best Linux distros for developers 2026 are not always the most popular ones online. Choose the wrong distro, and you will spend the first week of every new project trying to work around your own environment. There is no point in matching package versions during build time if your CI environment does not reflect […]

You’ve got all of your variables defined, your script appears correct, and then when you run echo '$APP_DIR', the terminal spits back a dollar sign instead of the actual directory path. You are now sitting in front of the terminal wondering, “What just happened?” I wrote echo '$APP_DIR' using single quotes and could not understand […]

The tree command in linux with examples is the fastest way to visualize any directory structure at a glance. ls -R is fine as long as there are only 400 files in the directory. At that point, you have scrolled through a mountain of text looking for the subdirectory where all your work was done. […]

11 Bash Variables and Default Values Made Easy | LinuxTeck Learning bash variables types explained with examples is the foundation every Linux scripter needs before writing anything serious. The first bash script I attempted to run produced an error that made absolutely no sense to me. It turned out I had written name = "LinuxTeck" […]

Bash Decision Scripts Made Simple: 11 Real-World Examples | LinuxTeck While writing a Bash script with a simple sequential list of commands has some utility, this type of scripting is very limiting. A script truly comes into its own when it can make decisions automatically based on conditions or command results. Bash conditional statements allow […]

Fragnesia (CVE-2026-46300): New Linux Kernel Flaw Raises Security Concerns | LinuxTeck Security researchers have disclosed a newly discovered Linux kernel vulnerability called Fragnesia that is drawing attention due to its potential to increase system compromise risks for unprivileged local users. · Published May 14, 2026 · Updated May 14, 2026 · ⏱ 3 min read […]

Bash Case Statement with Examples — Shell Script Case Statements Made Simple | LinuxTeck You may be familiar with the challenge of having to use multiple if, elif, and else, blocks when checking for many different cases in one shell script. The bash case statement with examples provides a much simpler and easier-to-read method to […]

Most Developers spend more time getting around their Terminal rather than actually using it. To help you get most out of your Terminal, we have included some smart tips to help you save countless keystrokes; complete repetitive tasks in half the time and boost your efficiency. The guide will provide you with 11 smart Terminal […]

Understanding the HTTP vs HTTPS difference is not just theoretical. When users log into a website, submit forms, or send passwords through a browser, they naturally expect that information to remain secure. However, one missing “S” in your server configuration can silently expose login credentials, passwords, and form submissions sent to your Linux server. HTTP […]

Throughout my years in the field, I’ve seen that mastering the mkdir command in linux is one of the first skills every user learns. This tool makes the process of creating directories fast, efficient, and powerful. Whether you are a novice organizing personal files or a sysadmin scripting a complex deployment hierarchy, you will find […]

Bash if Statement: Complete Guide with Examples | LinuxTeck If you have ever wanted your Linux scripts to make decisions on their own, you are in the right place. The bash if statement is a fundamental building block that allows shell scripts to test conditions and decide what action to take next. This bash if […]

Dirty Frag Linux Vulnerability Explained: What You Need to Know | LinuxTeck · Published May 9, 2026 · Updated May 9, 2026 · ⏱ 3 min read A new linux vulnerability called "Dirty Frag" is causing serious security problems. Understanding this will allow you to take protective measures for your systems before an attacker exploits […]

Bash if elif else Statement with Examples – LinuxTeck.com A basic Bash scripting need for making decisions about certain conditions is using the bash if elif else statement with examples. The conditional logic in scripts makes a static shell script into an active-thinking reactive automation of real server tasks. As either a new scripting user […]