Linux server security is crucial to Linux server administration. Part of keeping Linux servers secure is installing security updates shortly after they become available. Too often, compromised servers are a result of pending security updates awaiting manual installation. In general, for critical servers where you cannot afford unplanned downtime should be very careful with automatic updates. While there are […]
Best Linux distro and Desktop Environment Combinations
Are you searching for the best Linux distro (distribution) and DE (Desktop Environment) combination? What better way to increase your familiarity with Linux servers than running Linux on your laptop or workstation? As mentioned previously, there’s the best Linux Distro for me and the best Linux Distro for you. What you choose today will often change […]
dnf error: cannot find the libbrotlidec.so.1 library (cPanel/WHM CentOS 7 to AlmaLinux 8)
Upgrading from CentOS 7 to AlmaLinux 8 is a significant step towards ensuring that your systems remain secure, supported, and up-to-date with the latest features and security patches. AlmaLinux 8, as a community-driven replacement for CentOS, offers a robust and reliable platform that is binary compatible with RHEL 8. This transition, however, can sometimes present […]
What CentOS alternative distro should you choose?
In January 2014, CentOS announced it was officially joining Red Hat while staying independent from Red Hat Enterprise Linux (RHEL) under a new CentOS governing board. However, in December 2020, Red Hat requisitioned that CentOS terminate the development of CentOS 8. They also announced that support would be shifting to a CentOS alternative rolling-release Linux […]
Linux Commands frequently used by Linux Sysadmins – Part 1
What are some Linux commands used by Sysadmins and power users daily? In this article, I’ve listed 10 such commands frequently used. Suggestions and feedback are welcome. Also, see Part 2, Part 3, Part 4, and Part 5. Some people consider Linux a complicated operating system geared toward expert users only. However, as a free and […]
90 Linux Commands frequently used by Linux Sysadmins (updated to 100+)
If you are interested in Linux commands frequently used by Linux sysadmins and power users, I’ve published this five-part series with over 90 update: 100+ Linux commands with links to each of the five articles in this series – click on each subheading. This list covers popular Linux commands used by sysadmins and power users. […]
Fix Error: Failed to download metadata for repo ‘appstream’ – CentOS 8
As we all know, CentOS 8 reached its End of Life (EOL) on December 31, 2021, and CentOS Linux 7 will reach its end of life (EOL) on June 30, 2024, marking a significant shift in the CentOS ecosystem. This transition to CentOS Stream leaves system administrators and users with some important decisions to make. […]
Linux Commands frequently used by Linux Sysadmins – Part 5
This is the final part of the five-part series entitled: Linux Commands frequently used by Linux Sysadmins. So far, we’ve covered over 50 commands regularly used by Linux sysadmins and power users. Refer to part 1, part 2, part 3, and part 4. This article will look into another set of commands and command-line tools […]
How to Gzip a Directory Using Linux Command Line
Efficiently managing files and directories is a fundamental task in computing. It’s crucial for keeping our data organized, optimizing storage space, and facilitating smooth data transfers. In the Linux ecosystem, the gzip utility shines as a powerful compression tool, allowing users to easily compress files and directories. This article delves into directory compression using the […]
How to fix: At least xMB more space needed on the /boot filesystem
Running sudo dnf upgrade in Fedora CentOS or RHEL will sometimes result in the following error: At least xxMB more space is needed on the /boot filesystem. Let’s fix this! List all installed kernel packages with: yum list kernel On Fedora 22+, CentOS Stream and RHEL 8+, use: dnf list kernel The kernel in use […]