System Code Geeks Operating System Developers Resource Center

This is a short tutorial about the similarities and the differences of redundant storage, backup, and archive functionality. I felt a need to create this short introduction because I realized that many IT professionals do not know the difference between these operations and many times mix them or using the wrong approach for some purpose. I personally once was the ...

I recently started using i3wm because it is light-weight, keyboard-friendly and uses the screen real-estate efficiently.  I customized i3bar and i3status (which came installed with i3) to show system information and date/time. But there was no out-of-the-box feature to get weather information from i3 status. I wanted a simple solution that does not require installing an external program like i3blocks, conky, dzen2, xmobar ...

Docker Compose is a great utility for anyone developing Dockerized applications. It’s a tool that I personally use daily. Recently I came across yet another powerful feature of Docker Compose: the ability to change Linux Kernel Parameters. In today’s article, we will explore how to use this often overlooked but “useful when you need it” feature of Docker Compose. To ...

  Hello Friends, In this tutorial,you will learn top Unix commands which are handy in day to day work,specially from Java developer point of view.   1.  How to create a new file in Unix touch <fileName> Example : touch abc.txt 2. How to see content of file in Unix(without able to edit) cat <FileName>     Example : cat abc.txt ...

I’ve decided to write this blog post after noticing how many people were asking me to make gettext optional when building fswatch. At the beginning I actually thought it was optional. And I never dug any deeper into the matter because, apparently, everybody experiencing this problem was building fswatch from the repository sources instead of building it from a release tar-ball. ...

Since the release of the OpenShift Container Platform (OCP) it has been my desire to provide a simple, fully configured and easy to use installation. This installation needs to have the Red Hat Middleware product streams installed (pre-configured container options) and all the extras like source to image and .Net Core containers. For some time there’s been easy to use ...

If you ever need to wait to execute something until the last mile of Windows’ Setup (also called OOBE, or Out-of-the-Box-Experience) is done, there isn’t much information out in the wild about what you need to wait on. You also can’t programmatically determine the current boot state (without running a boot trace, and you still have to process it after ...

I recently needed to create a Kubernetes pod that would ‘just sit there’ while I used kube cp to copy some files to a persistent volume to which it was bound. I started out with this naive pod spec: pod_no_while.yaml kind: Pod apiVersion: v1 metadata: name: marks-dummy-pod spec: containers: - name: marks-dummy-pod image: ubuntu restartPolicy: Never Let’s apply that template: ...

Ansible is a good tool. You can do what it gives you in many different ways, and you might be already doing it. With this assumption, I’ll try to show you why you might like it. Ansible and I I have recently passed Red Hat Certificate of Expertise in Ansible Automation. I have taken the exam because I felt that ...