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.…
Ansible reboot Linux machine or server with playbooks
Indeed to reboot the VM or bare metal Linux machine/server using Ansible and wait for it to come back but it does not work with the playbook as described here.…
How to display listening ports using the netstat from the command line
If you’re troubleshooting a service that you know is running normally, the next step is to ensure it’s listening on the correct network port. The netstat command shows the services…
How to use buffers to copy and paste lines in VI/VIM
The vi and vim editors allow you to copy text from your file into temporary buffers for use in other places in the file during your current vi work session.…
Okta Hack Exposes A Huge Hole In Tech Giant Security: Their Call Centers
Under Costa Rica’s sunny skies, in a pastel-colored office space northwest of the capital San José, employees are beavering away in their cubicles, answering calls and providing tech support for…
What are Denial of Service (DoS) attacks? DoS attacks explained
A Denial of Service (DoS) attack can be easily engineered anywhere. Learn more about what it is and how it works. A “denial of service” or DoS attack ties up…
What is identity and access management (IAM)?
Overview Identity and access management (IAM) is a centralized and consistent way to manage user identities (i.e., people, services, and servers), automate access controls, and meet compliance requirements across traditional…
Linux Download: Top 12 Free Linux Distributions for Desktop and Servers
All the Linux distributions are either derivatives of GNU/Linux ( OS made up of Linux Kernel developed by Linus Torvalds and GNU software repository) or derived from other Linux derivatives.…