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.
Cluster SSH – Manage Multiple Linux Servers Simultaneously
Cluster SSH (cssh) is a utility that allows you to manage multiple servers over SSH from a single administration console. It was originally designed to work with multiple nodes that make up a HPC (High Performance Computing) cluster. These nodes are usually configured identically, therefore…
DHCP + PING = DHCPING = Testing DHCP Availability
The dhcping utility is a tool to allow you to check if a DHCP server is functioning on the network. It is a tool that is handy for DHCP troubleshooting.
Ping – Basic Network Troubleshooting in Linux
Ping is the most common network troubleshooting command. Learn what ping is, how it works and how to use some of it’s option to troubleshoot network issues.
Customize Gnome 3 with the Gnome Tweak Tool A.K.A. Tweaks
How to install and use the Gnome Tweak Tool to customize your Gnome Desktop. Learn how to add new functionality with Gnome Shell Extensions.
Exec Command – Process Replacement & Redirection in Bash
The Linux exec command is a bash builtin and a very interesting utility. It is not something most people who are new to Linux know. Most seasoned admins understand it but only use it occasionally. If you are a developer, programmer or DevOp engineer it…
Find Command – Search for files on the Linux Command Line
Everything you will ever need to know about the Linux find command. From it’s basic syntax to executing commands on matching files from the command line.
Checksum – File Integrity Check on Linux Command Line
Using a checksum to do a file integrity check on the Linux command Line. We explain how to use the checksum commands provided by the GNU Core Utilities.
Timeout Command – Stop Command After X Seconds
Using the Linux timeout command to stop commands after a specified amount of time. Learn how to send specific signals and preserve exit status of commands.
Using the Bash case Statement in Shell Scripting
Learn to use the Bash case statement to conditionally execute commands based on pattern matching, it’s different clause terminators and explore examples.
Paste Command – Merge Files on the Linux Command Line
How to use the Linux paste command to sequentially merge two files on the command line. Learn all the basic options with examples.