System Code Geeks Operating System Developers Resource Center

Are you considering macOS as your next operating system? Are switching from Windows or Linux to macOS? Do you want to develop in Java on macOS? Or maybe you are looking for tools to help you being more productive? Read about tools that are essential to me (after switching from Windows to macOS). Development Homebrew iTerm2 SDKMAN! Git Docker IntelliJ ...

How to create a CentOS 7 virtual machine in VMware Workstation 15 You want to set up CentOS 7.7 in VMware Workstations 15 Player with the following configurations: two SCSI hard disks, each with 100 GB of storagetwo virtual CPUs You will need the following bill of materials: Host operating system with sufficient memory and hard disk capacityCentOS 7.7 imageWMware ...

When it comes to locating files or directories on your system, the find command on Linux is unparalleled.  It’s simple to use, yet has a lot of different options that allow you to fine-tune your search for files. Read on to see examples of how you can wield this command to find anything on your system. Every file is only ...

In this tutorial, we will cover SSH port forwarding in Linux. This is a function of the SSH utility that Linux administrators use to create encrypted and secure relays across different systems. SSH port forwarding, also called SSH tunneling, is used to create a secure connection between two or more systems. Applications can then use these tunnels to transmit data. ...

In this tutorial, you will learn how to use the very essential grep command in Linux. We’re going to go over why this command is important to master, and how you can utilize it in your everyday tasks at the command line. Let’s dive right in with some explanations and examples. Why do we use grep? Grep is a command ...

In this tutorial, we will cover the cURL command in Linux. Follow along as we guide you through the functions of this powerful utility with examples to help you understand everything it’s capable of. The cURL command is used to download or upload data to a server, using one of its 20+ supported protocols. This data could be a file, ...

You can think of Linux runlevels as different “modes” that the operating system runs in. Each of these modes, or runlevels, has its own list of processes and services that are either turned on or off. From the time Linux boots up, it’s always in some runlevel. This runlevel may change as you continue to use your computer, depending on ...

In this tutorial, we will talk about killing a process in Linux with multiple examples. In most cases, it’s as simple as typing “kill” command followed by the process ID (commonly abbreviated as PID). In the screenshot above, we’ve killed a process with the ID of 1813. If you are a Windows user, it may help to think of the ...

It’s been awhile since I’ve talked about running OpenShift Container Platform on your local machine. This mean a container platform at your finger tips, one you can experience the joys of cloud native development and automated rolling deployments. Since I started pulling together ways to easily experience this with OpenShift Container Platform, back with version 3.3 believe it or not, ...