What is penetration testing?
Penetration testing (or pen testing) is a security exercise where a cyber-security expert attempts to find and exploit vulnerabilities in a computer system. The purpose of this simulated attack is…
Nightly Reboot – Linux Cronjob Example
DISCLAIMER I’m not a certified financial planner/advisor nor a certified financial analyst nor an economist nor a CPA nor an accountant or a lawyer. I’m not a finance professional through…
Ansible: yum update, reboot system, and wait_for reboot to complete
Table of Contents The Objective The purpose of this post is to explain with an example how ansible initiates the reboot and waits for the reboot to complete. In some…
How to check if a File exists in bash
There are several ways to check the availability of a file in Linux. The “test” command in bash scripting is one of the critical approaches to checking a file’s existence.…
Syntax Errors: What They Are and Why They’re a Problem
Even the smallest mistakes can break an app Computer languages impose strict rules. A syntax error means one of those rules is broken. Syntax exists in ordinary language. It’s the…
What is Open-Source
Open-source is a term used to describe computer programs that have source code that’s available to study, modify, and share. Open-source software can be used for any purpose, studied and…
