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 […]

The touch command in Linux is one of those tools that looks too simple at first glance.However, it becomes an essential part of day-to-day administration in shell scripts, cron jobs, CI/CD pipelines, Docker builds, and log rotation workflows. This article provides detailed information on all aspects of using the touch command in Linux, including practical […]

Backup and Remote Server Shell Scripts Made Simple | LinuxTeck Every SysAdmin has had at least some lost sleep because of a bad backup or missed scheduled (manual) tasks on a distant server. Writing a Linux Bash Script to backup files and directories automatically is probably one of the best things you can do for […]

How to Migrate Linux Server to AWS Cloud: Step-by-Step 2026 | LinuxTeck Distro-specific walkthrough for Ubuntu 22.04/24.04, Rocky Linux 9, and RHEL 9 using AWS Application Migration Service (MGN). Includes CLI commands, troubleshooting, and post-migration validation scripts. Linux Ransomware Growth 2023-2025 4x Avg. Breach Cost 2024 $4.9M Avg. Recovery Without Clean Backup 22 days Attacks […]

How to Write Interactive Shell Scripts in Linux | LinuxTeck Writing interactive shell scripts on Linux is a skill that can take simple automation and turn it into something truly valuable. Interactive shell scripting allows you to create scripts that can ask for user input, display menus, prompt for confirmation before performing dangerous actions, or […]