Steven Vona is a Linux administrator whose passion for technology extends beyond the day to day and into a love of teaching his skills to others. Steven is trained and certified in multiple technologies, including Microsoft Windows, Linux, VMWare and Cybersecurity, and has over 16 years of experience working in both the public and private sectors. Because Steven did not complete a traditional educational path, he is mostly self-taught and a strong believer in learning by experimentation. Steven began to teach himself programming at age 12 and ran a BBS in 1988; when teaching, he encourages others to try different solutions and learn from their mistakes and successes. Outside of technology, Steven is an animal lover and an avid photographer who enjoys exploring and photographing his native city, Philadelphia.
Linux head Command – Print First X Lines from File
Today we are going to discuss another handy text utility that is part of the GNU Core Utilities package. The head command allows you to display the beginning of a file. In this short tutorial we will discuss how to use the head command, it’s…
How to Change a User’s Default Shell in Linux
In this Linux quick tip we will discuss changing your current and default shells. There was once a time when bash was the default shell on almost all Linux systems. That is not necessarily true anymore. However, after this short tutorial you will feel comfortable…
How to Create a Multiple Choice Menu in Bash Scripts
Learn how to create a multiple choice menu for your Bash scripts. This allows the user to select a number that corresponds to an option.
systemd-tmpfiles – Managing Temporary Files & Directories
Using systemd-tmpfiles services for managing system and user temporary files and directories and creating user specific systemd-tmpfiles configurations.
Unexpand – Convert Spaces to Tabs on Linux Command Line
The unexpand command is a utility that easily converts spaces to tabs in any file on the Linux command line. Learn how to use it and it’s options!
Expand – Convert Tabs to Spaces on Linux Command Line
The expand command is a utility that easily converts tabs to spaces in any file on the Linux command line. Learn how to use it and it’s options!
BMON – Monitor Bandwidth from the Linux Command Line
The bmon utility allows you to monitor bandwidth utilization on the Linux command line. It’s powerful options and modules make it a robust monitoring tool.
Brute Force Attacks – Pen Testing Using Hydra and RSMangler
How to use Hyrdra and RSMangler to launch a brute force attack. Penetration testing professionals use these tools for cybersecurity evaluation of a system.