This article tackles a topic that often seems intimidating to new administrators: the Linux kernel. (more…)
As Linux administrators, securing our systems and networks is one of our most critical responsibilities. Firewalls serve as the cornerstone of that security, and in the Linux ecosystem, iptables, ip6tables, (more…)
If you’ve recently installed Docker on your Linux system, you might have encountered this frustrating error message when trying to run Docker commands without sudo: (more…)
When developing software, particularly in languages like C and C++, crashes are inevitable. The dreaded “Segmentation fault (core dumped)” message can be frustrating, but the core dump it generates is a valuable debugging tool. (more…)
Have you ever been working in your Ubuntu terminal when suddenly that jarring error sound interrupts your flow? Those system alert sounds might be useful sometimes, (more…)
Managing users and groups effectively is one of the most fundamental skills for any Linux system administrator. Whether securing a production server, organizing access rights for a development team, (more…)
As Linux admins, we’re constantly dealing with storage. Whether it’s for databases, file servers, virtual machines, or just plain user data, we need storage that’s reliable, performant, and flexible. (more…)
Hey Linux admins! Ever wondered how your system magically recognizes that new USB drive you plugged in, or how your sound card just works? (more…)
If you plan to compile software from source code on Ubuntu (which is common for developers and system administrators), you’ll need the build-essential package. (more…)
This guide addresses common OpenVPN DNS troubleshooting Ubuntu 18.04 issues, where a successful VPN connection does not guarantee proper DNS resolution. (more…)
