Expert tutorials, guides, and tips on Linux, DevOps, and IT Administration
Explore the complete Dargslan open-source IT ecosystem: 120 Linux PyPI packages, 119 Windows Python CLI tools, 120 PowerShell modules on PSGallery, and organized GitHub repositories. Free, professional-grade tools for sysadmins, DevOps engineers, and cybersecurity professionals....
Side-by-side comparison of tmux, GNU Screen, Byobu, and Zellij. Feature tables, keybinding comparison, and recommendations for every use case....
Side-by-side comparison of managing Linux vs Windows servers from Mac. Protocols, tools, workflows, and when to use each. Free 6-page PDF cheat sheet included....
Audit Linux kernel security parameters with Python. dargslan-kernel-check evaluates 20+ sysctl settings including ASLR, SYN cookies, IP forwarding, and provides a hardening score out of 100....
Analyze Linux swap usage in detail. dargslan-swap-analyzer shows per-process swap consumption, swap devices, memory pressure, and provides optimization recommendations....
Audit installed Linux packages for security updates, outdated versions, and orphaned dependencies. dargslan-package-audit auto-detects apt, dnf, pacman, and zypper systems....
Monitor network bandwidth and interface statistics on Linux. dargslan-bandwidth-monitor reads /proc/net/dev to track RX/TX traffic, measure throughput, and detect interface errors....
Look up any IP address to find its country, city, ISP, ASN, and organization. dargslan-ip-geo provides geolocation, WHOIS lookup, and reverse DNS — all from Python or the terminal....
Audit your SSH server configuration for security issues. dargslan-ssh-audit checks PermitRootLogin, PasswordAuthentication, weak ciphers, host key types, and authorized_keys — all from terminal or Python....
Compare the best Linux server monitoring tools: Prometheus, Grafana, Zabbix, Nagios, Netdata, and htop with setup guides and use case recommendations....
Manage and audit systemd timers using Python. dargslan-systemd-timer lists active timers, detects failed services, compares with cron jobs, and provides migration recommendations....
Monitor MySQL and MariaDB server health using Python. dargslan-mysql-health checks connection usage, slow queries, replication status, and database sizes from the terminal or Python scripts....
Welcome to the Dargslan Tech Blog — long-form, hands-on articles for engineers who run real systems in production. We publish every week on Linux administration, DevOps tooling, cloud architecture, cybersecurity, Python automation, Windows Server, and the practical day-to-day skills that separate junior sysadmins from senior platform engineers. Every post is written by working professionals, includes copy-pasteable code and configuration files, and is updated whenever upstream tools release breaking changes.
There is no shortage of tech blogs on the internet, but most fall into one of two traps: shallow listicles written by people who have never touched the tools, or 30-page corporate whitepapers designed to sell a product. Our articles sit in the middle — long enough to actually solve your problem, short enough to read with a coffee, and always grounded in working examples you can run in your own terminal. We don't write filler, we don't gate content behind email forms, and we never publish AI-generated slop without expert review.
Our writers come from a sysadmin, SRE, and DevOps background and have shipped production systems for fintech, healthcare, telco, and SaaS companies across Europe and North America. When you read a tutorial here, you're reading what someone actually did at 2am during an incident — not a sanitized vendor case study.
Subscribe to our RSS feed, follow the tech news section, or grab the daily IT tip for a steady stream of practical knowledge. If long-form learning is more your style, our companion eBook library covers every topic from this blog in 200-500 page depth, with downloadable code repositories and lifetime updates.