Top Linux resources of 2022

As we head towards the end of 2022, Red Hat Developer is taking a look back at the most intriguing and popular content for the technologies that matter most to our readers. We'll start off with a roundup of the best Red Hat Enterprise Linux content of 2022, highlighting some of the most popular stories about Red Hat's flagship Linux distribution.

Don't miss the other articles in our Best of 2022 series:

• Top Kubernetes and OpenShift resources of 2022
• Top Ansible and automation resources of 2022
• Top cloud and app services resources of 2022

Containers

Join Karan Singh as he explains how to shrink the size of Docker container images using the open source project DockerSlim. If you want to dive deeper and learn more about Podman, an open source container platform that's an alternative to Docker and supported by Red Hat, review the resources for beginners and experts curated by the Red Hat Developer team.

Another exciting improvement is that .NET can now control Podman! Tom Deseyn introduces dotnet build-image, a tool that creates Dockerfiles and containerized images. You can use build-image to create an image from a .NET application and push it to a repository.

GCC and GDB

Keith Seitz offers an introduction to the debugging information used to describe compiled code. Bruno Larsen then explains how to meet debugging challenges with GDB, the standard open source debugger for C and C++ programs. Lastly, David Malcolm discusses Red Hat's work on static analysis in the current major release of GCC, GCC 12.

macOS updates

Many professional Linux developers and sysadmins use Apple hardware for their personal and dev machines, and will want to run virtual Linux servers on their laptops. Varsha Sharma walks us through how to install a command that is not from the App Store, using the popular Helm client as an example. Follow along to see how Red Hat created a beta to run virtualized versions of two key technologies, RHEL 9 and single-node OpenShift, using Apple silicon. Lastly, join Arnav Bhati to learn how Red Hat Enterprise Linux VMs can be easily installed on Macs using UTM.

Regular expression

Bob Reselman shows you how to use regular expressions to declare a pattern you want to match, and outlines the essential regex building blocks. He explains that if you want a more advanced challenge, you can learn how to capture groups, lookaheads, and lookbehinds. Another notable piece written by Reselman introduces some more advanced syntax: quantifiers, pattern collections, groups, and word boundaries.

Product announcements

In one of our top announcements, we clarified what we call development activities and highlighted some exciting uses of the Developer Subscription for Teams. Another important piece of news is that organizations that use CentOS Linux offerings to support developers can now access a RHEL subscription and all the benefits of the Red Hat Developer Program.

Top resources

Thanks to the hard work of our editors and writers, we released a series of cheat sheets this year. Our first is Linux Commands, which offers Linux commands commonly needed by developers, with explanations and screenshots. Next up is Intermediate Linux Commands, which covers Linux commands and executables for developers who use Linux in advanced programming scenarios. Lastly, we recently released Advanced Linux Commands, which will take your Linux command knowledge to the next level.

Daniel Walsh, who leads the Podman team at Red Hat, wrote the Podman in Action e-book to help you learn Podman quickly. You'll find easy-to-follow examples that include steps to deploy a complete containerized web service.