Linux Common Commands Linux commands can be categorized based on their functionality. Here are some main categories along with some common commands in each category: 1. File and Directory Operations 2. Viewing and Editing File Contents 3. File Permissions and…
I’ve been there—faced with a Linux server that’s slower than molasses in winter. It’s a headache, but it’s a common one. Fortunately, after many late nights and countless cups of coffee, I’ve honed a few strategies to get my server…
Remember those early days of using Linux? It felt like the Wild West of computers! You could customize everything, which was awesome, but there was always this nagging worry in the back of your mind. What if you accidentally downloaded…
Remember those days when fixing stuff on your Linux computer involved typing out the same commands over and over again? It felt endless! Then, I learned about these things called “for loops” in Bash scripting, and let me tell you,…
In the realm of Linux system security, controlling which applications can execute is a critical aspect of maintaining a secure environment. fapolicyd is a powerful tool designed for Red Hat Enterprise Linux (RHEL) that allows administrators to define and enforce…
understanding for loop in Bash The for loop is a fundamental programming construct to execute a series of commands repeatedly for a predefined set of values or elements. With the for loop, Bash scripts can efficiently iterate over lists, arrays,…
In Bash, exit codes (also known as return codes or status codes) are numeric values returned by executed commands or scripts to indicate the result of their execution. These exit codes are often used to determine the success or failure…
When you encounter a “GPG check FAILED” error while trying to install an RPM package with yum, it typically means that the GPG signature of the package does not validate against the known public keys on your system. This can…
The HostnameMismatchError is an exception that occurs in Python when there is a mismatch between the hostname specified in the URL you are trying to access and the hostname provided by the SSL certificate of the server you are connecting…
Understanding the SSH Command for GitHub The command ssh -T -p 443 [email protected] is used to establish an SSH (Secure Shell) connection to GitHub’s Git services over the SSH protocol. Let’s break down the components of this command: The purpose…
