System Code Geeks Operating System Developers Resource Center

I decided to give Ubuntu 20.04 a try on my 2015 15″ MacBook Pro. I didn’t actually install it; I just live booted from a USB thumb drive which was enough to try out everything I wanted. In summary, it’s not perfect, and issues with my camera would prevent me from switching, but given the right hardware, I think it’s ...

After switching from Windows to macOS in 2019 I also changed my default note-taking app from OneNote to macOS build-in Notes.app. I wasn’t sure this is the right move, so I switched gradually with carefully selected topics only. But after several weeks of using both OneNote and Notes app, I switched fully, and after using Notes for several months now ...

Backing up and syncing files and directories between drives is pretty common use case for many users. In this quick tutorial you will learn how to use launchd and rsync to synchronize files between different volumnes in macOS. Problem Synchronize a (KeePass) file between two drives in macOS in both directions. Solution Watch for file changes in both locationsSynchronize the file between locations and ...

When I’m setting up a new computer, one of the tasks I need to do is set up new SSH keys to access different servers. It’s good practice not to use the same key for different services. Keys are useful so you don’t need to type your credentials in all the time when working on a trusted PC. Instead of ...

There is no better way to learn about container technologies, container platforms, and container-based application development than getting hands-on with great open technologies. Previously, I’ve shared how to install a custom latest greatest version of theRed Hat decision management tooling. The question that remains is, what do you need to do to make use of the container images pre-installed with ...

Here is my list of some of the most useful  MySQL commands which I have used in my day to day life while working with MySQL database in Linux. This comes straight from my notes so you may not find a lot of documentaries around it but they all are very useful. If you need to know more about any ...

For some time now we’ve been working on updating your experience using Code Ready Containers, a container platform installation for your local machine, by providing interesting developer tooling and project examples. There is no better way to learn about container technologies, container platforms, and container-based application development than getting hands-on with great open technologies. Previously, I’ve shared how to install ...

FFmpeg is a great command-line tool for dealing with audio and video files. Here are some useful commands: 1. Reduce the size of a file Try passing the file straight through ffmpeg and check if the size reduces: 1 ffmpeg -i input.mp4 output.mp4 To reduce the size further, scale the video to half the width and height: 1 ffmpeg -i ...

Using docker in Windows is a bit like discovering that someone’s missed a vital memo. Everything nearly works as you might hope, but there are glitches all over the place. I use bash as my shell for scripting various things we do with docker in Windows. This leads to two enormously annoying issues: I’ve found it very difficult to mount ...