Personal blog and site of Dan Fryhttps://www.danfry.net/https://www.danfry.net/blog/4-quick-cli-one-liners-to-troubleshoot-cpanel-server-spikes/https://www.danfry.net/blog/4-quick-cli-one-liners-to-troubleshoot-cpanel-server-spikes/Quick CLI one-liners for cPanel and CloudLinux servers to inspect top client IPs, track 404/500 error spikes, check ModSecurity blocks, and audit active web sockets.Sun, 11 Oct 2026 16:00:00 GMThttps://www.danfry.net/blog/a-nod-to-leisure-suit-larry/https://www.danfry.net/blog/a-nod-to-leisure-suit-larry/A nostalgic nod to Leisure Suit Larry: growing up with LSL6 at La Costa Lotta, Sierra vs LucasArts, and rediscovering the collection in Steam.Thu, 08 Oct 2026 12:00:00 GMThttps://www.danfry.net/blog/how-do-i-update-this-os/https://www.danfry.net/blog/how-do-i-update-this-os/A quick reference guide for updating operating systems: Windows with UniGetUI, Debian/Ubuntu (apt vs dist-upgrade), AlmaLinux (dnf/yum), Arch (pacman), Alpine, and FreeBSD.Sun, 04 Oct 2026 14:00:00 GMThttps://www.danfry.net/blog/behind-the-agent-breakouts-unconstrained-rl-meets-neglected-egress-filtering/https://www.danfry.net/blog/behind-the-agent-breakouts-unconstrained-rl-meets-neglected-egress-filtering/Why recent AI agent sandbox escapes aren't sentient rogue hackers, but classic operational security failures: unmonitored egress, trusted proxies, and unconstrained RL reward loops.Tue, 29 Sep 2026 14:00:00 GMThttps://www.danfry.net/blog/what-is-big-pickle-llm-stealth-reasoning-model/https://www.danfry.net/blog/what-is-big-pickle-llm-stealth-reasoning-model/Spotting 'Big Pickle' in your AI model picker? Here is a quick breakdown of OpenCode Zen's rotating stealth reasoning model, its specs, and how it works.Sat, 19 Sep 2026 15:30:00 GMThttps://www.danfry.net/blog/building-an-engineers-second-brain-obsidian-setup/https://www.danfry.net/blog/building-an-engineers-second-brain-obsidian-setup/A look inside a comprehensive Obsidian second brain for life, business, wealth, and engineering: E2E encrypted sync, Git backups, AI curation, Dataview dashboards, and Templater runbooks.Tue, 01 Sep 2026 14:00:00 GMThttps://www.danfry.net/blog/quiet-markdown-revolution-second-brain-agentic-ai/https://www.danfry.net/blog/quiet-markdown-revolution-second-brain-agentic-ai/A technical field guide to the emerging Markdown (.md) standards powering modern AI agents: AGENTS.md, OKF.md, SKILL.md, SHIELD.md, and SOUL.md.Fri, 28 Aug 2026 14:00:00 GMThttps://www.danfry.net/blog/wordpress-rce-exploits-file-integrity-monitoring-audit/https://www.danfry.net/blog/wordpress-rce-exploits-file-integrity-monitoring-audit/A breakdown of 2026 critical WordPress & CMS RCE attack vectors (including the wp2shell chain) and two zero-dependency Bash & PHP file integrity auditing scripts to detect injected backdoors.Thu, 20 Aug 2026 14:00:00 GMThttps://www.danfry.net/blog/coldcard-rng-entropy-vulnerability-verify-dont-trust/https://www.danfry.net/blog/coldcard-rng-entropy-vulnerability-verify-dont-trust/A technical postmortem of the 2026 Coldcard PRNG entropy exploit: why 40-bit software fallbacks are fatal, why firmware patches don't fix weak seeds, and how to build a resilient multi-vendor Bitcoin custody stack.Wed, 12 Aug 2026 14:00:00 GMThttps://www.danfry.net/blog/migrating-away-from-wordpress-at-lunch-with-ai/https://www.danfry.net/blog/migrating-away-from-wordpress-at-lunch-with-ai/How I migrated a 10-year-old WordPress blog with 88 articles and 136 media assets to Astro SSG in a single lunch break using AI pair programming.Wed, 05 Aug 2026 17:20:00 GMThttps://www.danfry.net/blog/free-ai-models-and-endpoints-for-your-ai-agents/https://www.danfry.net/blog/free-ai-models-and-endpoints-for-your-ai-agents/Curated list of free and generous API tier LLM endpoints for powering AI coding agents and local scripts, including Groq, OpenRouter, and Gemini.Sat, 04 Jul 2026 18:30:15 GMThttps://www.danfry.net/blog/self-hosting-docker-microservices-traefik-portainer-cloudflare/https://www.danfry.net/blog/self-hosting-docker-microservices-traefik-portainer-cloudflare/How to architect a modern self-hosted homelab stack using Docker Compose, Traefik 3 reverse proxy, Portainer, and Cloudflare Tunnels.Wed, 06 May 2026 11:05:30 GMThttps://www.danfry.net/blog/hardening-debian-12-and-ubuntu-servers-security-checklist/https://www.danfry.net/blog/hardening-debian-12-and-ubuntu-servers-security-checklist/A practical 10-step security hardening checklist for Debian 12 and Ubuntu servers: SSH keys, UFW firewall, Fail2ban, and kernel sysctl tuning.Mon, 13 Apr 2026 16:10:42 GMThttps://www.danfry.net/blog/running-local-ai-coding-assistants-ollama-deepseek-coder/https://www.danfry.net/blog/running-local-ai-coding-assistants-ollama-deepseek-coder/How to run local, private AI coding assistants on your own hardware using Ollama, DeepSeek-Coder, and VS Code with the Continue extension.Sun, 08 Mar 2026 09:45:18 GMThttps://www.danfry.net/blog/from-chatbox-snippets-to-100-percent-autonomous-code/https://www.danfry.net/blog/from-chatbox-snippets-to-100-percent-autonomous-code/From typing 'continue...' across Part 1 and Part 2 codeblocks to autonomous multi-agent pipelines: how AI transformed my technical scripting into rapid project delivery.Tue, 24 Feb 2026 14:00:00 GMThttps://www.danfry.net/blog/basic-setup-steps-for-your-first-proxmox-server/https://www.danfry.net/blog/basic-setup-steps-for-your-first-proxmox-server/A step-by-step guide to configuring your first Proxmox VE hypervisor: no-subscription repository setup, SSH key hardening, Fail2ban, and LXC templates.Sun, 11 Jan 2026 14:22:10 GMThttps://www.danfry.net/blog/dimagegen-high-concurrency-go-microservice/https://www.danfry.net/blog/dimagegen-high-concurrency-go-microservice/Building a lightweight, high-concurrency Go microservice and CLI tool to generate and cache AI images straight to disk before native CLI tooling existed.Sun, 30 Nov 2025 16:00:00 GMThttps://www.danfry.net/blog/playing-with-ai-image-generation/https://www.danfry.net/blog/playing-with-ai-image-generation/Experiments with AI image generation using Midjourney, DALL-E, and Stable Diffusion, testing prompt engineering and photorealistic rendering.Fri, 18 Apr 2025 12:02:07 GMThttps://www.danfry.net/blog/from-batch-loops-to-go-binaries-a-scripters-evolution/https://www.danfry.net/blog/from-batch-loops-to-go-binaries-a-scripters-evolution/From late-90s batch loops and executable packers to C segfaults, Python venvs, and finding Go nirvana: a practical scripter's journey.Thu, 10 Apr 2025 14:00:00 GMThttps://www.danfry.net/blog/leveraging-ai-chatbots-on-x-a-small-guide-to-grok-and-askperplexity/https://www.danfry.net/blog/leveraging-ai-chatbots-on-x-a-small-guide-to-grok-and-askperplexity/How to use AI chatbots directly on X (Twitter) using Grok and @AskPerplexity for quick research, thread summaries, and web fact-checking.Sun, 23 Mar 2025 13:01:21 GMThttps://www.danfry.net/blog/firefox-to-arc-migration-guide-2025/https://www.danfry.net/blog/firefox-to-arc-migration-guide-2025/A comprehensive guide to migrating from Firefox to The Browser Company's Arc browser in 2025: profiles, extensions, keyboard shortcuts, and sync.Sun, 09 Mar 2025 13:24:35 GMThttps://www.danfry.net/blog/how-to-check-transfer-and-sell-pi-cryptocurrency-in-2025-a-beginner-friendly-guide/https://www.danfry.net/blog/how-to-check-transfer-and-sell-pi-cryptocurrency-in-2025-a-beginner-friendly-guide/A beginner-friendly guide to verifying Pi Network wallet balances, completing Mainnet KYC checklist items, and safely transferring Pi cryptocurrency.Sat, 22 Feb 2025 20:24:20 GMThttps://www.danfry.net/blog/cctv-watch-headless-rtsp-motion-detection/https://www.danfry.net/blog/cctv-watch-headless-rtsp-motion-detection/Building a lightweight, headless Python surveillance daemon that connects to IP camera RTSP streams and uses OpenCV frame differencing to eliminate false motion alerts.Wed, 20 Nov 2024 14:00:00 GMThttps://www.danfry.net/blog/the-end-of-an-era-icq-to-shut-down-after-over-25-years/https://www.danfry.net/blog/the-end-of-an-era-icq-to-shut-down-after-over-25-years/Remembering ICQ as the pioneering instant messaging client shuts down after 28 years: 90s chat culture, the famous 'Uh-oh!' sound, and legacy.Sat, 15 Jun 2024 01:31:45 GMThttps://www.danfry.net/blog/farewell-to-kabosu-the-doge-that-conquered-the-internet/https://www.danfry.net/blog/farewell-to-kabosu-the-doge-that-conquered-the-internet/A tribute to Kabosu, the Shiba Inu rescue dog behind the iconic Doge meme and Dogecoin, passing away at age 18 after shaping internet culture.Sat, 25 May 2024 13:20:07 GMThttps://www.danfry.net/blog/getting-rich-with-trading-bots/https://www.danfry.net/blog/getting-rich-with-trading-bots/From 2-3% daily compounding euphoria in a raging crypto bull market to catching falling knives in the bear turn: what running trading bots actually taught me.Thu, 14 Mar 2024 12:00:00 GMThttps://www.danfry.net/blog/the-smart-money-visual-edge-turn-govee-lights-into-bitcoin-or-any-crypto-trading-signals/https://www.danfry.net/blog/the-smart-money-visual-edge-turn-govee-lights-into-bitcoin-or-any-crypto-trading-signals/How to automate Govee smart RGB lights to change colors based on live Bitcoin and crypto market price movements using Python and webhooks.Sun, 03 Mar 2024 13:57:32 GMThttps://www.danfry.net/blog/resolving-avorion-server-error-attempt-to-call-field-contents-a-nil-value/https://www.danfry.net/blog/resolving-avorion-server-error-attempt-to-call-field-contents-a-nil-value/How to fix the Avorion dedicated server crash error 'attempt to call field contents a nil value' caused by corrupted inventory scripts.Fri, 29 Dec 2023 14:36:57 GMThttps://www.danfry.net/blog/troubleshooting-anaconda-installation-issues-on-debian-12/https://www.danfry.net/blog/troubleshooting-anaconda-installation-issues-on-debian-12/How to troubleshoot common Anaconda Python installation errors, path conflicts, and missing shared libraries on Debian 12 Bookworm.Wed, 20 Dec 2023 14:33:31 GMThttps://www.danfry.net/blog/rip-charlie-munger-unveiling-the-legacy-of-an-investing-genius-and-berkshire-hathaway-vice-chairman/https://www.danfry.net/blog/rip-charlie-munger-unveiling-the-legacy-of-an-investing-genius-and-berkshire-hathaway-vice-chairman/Remembering Charlie Munger, Vice Chairman of Berkshire Hathaway: mental models, multidisciplinary thinking, and timeless investing principles.Tue, 28 Nov 2023 19:56:01 GMThttps://www.danfry.net/blog/a-comprehensive-guide-to-upgrading-gitlab-from-major-version-to-major-version-in-debian/https://www.danfry.net/blog/a-comprehensive-guide-to-upgrading-gitlab-from-major-version-to-major-version-in-debian/Step-by-step guide to upgrading GitLab across major versions on Debian servers following the official upgrade path without breaking migrations.Thu, 20 Apr 2023 06:12:38 GMThttps://www.danfry.net/blog/building-an-algorithmic-crypto-trading-bot-in-python/https://www.danfry.net/blog/building-an-algorithmic-crypto-trading-bot-in-python/A technical walkthrough of building an automated Python crypto trading bot with mean-reversion algorithms, CCXT integration, and historical backtesting.Sun, 15 Jan 2023 10:00:00 GMThttps://www.danfry.net/blog/queen-elizabeth-ii-london-bridge-has-fallen/https://www.danfry.net/blog/queen-elizabeth-ii-london-bridge-has-fallen/Reflections on the passing of Queen Elizabeth II, the activation of Operation London Bridge, and the end of a historic 70-year reign.Thu, 08 Sep 2022 21:31:17 GMThttps://www.danfry.net/blog/switching-from-rsa-to-ed25519-ssh-keys/https://www.danfry.net/blog/switching-from-rsa-to-ed25519-ssh-keys/How to generate and migrate to Ed25519 SSH keys in OpenSSH, streamline your local ssh config, and handle legacy RSA SHA-1 host connections.Thu, 28 Jul 2022 15:10:00 GMThttps://www.danfry.net/blog/reset-wordpress-password-via-phpmyadmin-or-sql-commands/https://www.danfry.net/blog/reset-wordpress-password-via-phpmyadmin-or-sql-commands/How to reset an admin password on WordPress using direct MD5 SQL queries in phpMyAdmin or the MySQL command line when locked out.Wed, 22 Jun 2022 19:51:46 GMThttps://www.danfry.net/blog/upgrade-debian-stretch-9-to-buster-10/https://www.danfry.net/blog/upgrade-debian-stretch-9-to-buster-10/Complete walkthrough for upgrading Debian 9 Stretch to Debian 10 Buster via SSH: updating apt sources.list, dist-upgrade, and system cleanup.Fri, 11 Feb 2022 06:20:04 GMThttps://www.danfry.net/blog/essential-cpanel-apache-cli-snippets-inodes-symlinks/https://www.danfry.net/blog/essential-cpanel-apache-cli-snippets-inodes-symlinks/A collection of practical cPanel and Apache SSH one-liners for inode diagnostics, active server connections, and security symlink audits.Mon, 22 Nov 2021 12:00:00 GMThttps://www.danfry.net/blog/exim-cpanel-mail-queue-scripts-top-senders-forensics/https://www.danfry.net/blog/exim-cpanel-mail-queue-scripts-top-senders-forensics/Essential Exim and cPanel CLI one-liners to trace spam outbreaks, identify rogue PHP mail scripts, and purge thousands of frozen spool messages.Mon, 12 Apr 2021 12:00:00 GMThttps://www.danfry.net/blog/cybersecurity-career-paths/https://www.danfry.net/blog/cybersecurity-career-paths/Breaking down the Cyber Security Domains mind map by Henry Jiang: career paths across security architecture, incident response, governance, and user education.Sun, 06 Sep 2020 09:47:56 GMThttps://www.danfry.net/blog/google-data-center-security/https://www.danfry.net/blog/google-data-center-security/An inside look at Google's multi-layered physical and operational security measures protecting global cloud data center infrastructure.Sat, 20 Jun 2020 12:09:21 GMThttps://www.danfry.net/blog/vps-error-unable-to-create-cgroup-for-vm-no-such-file-or-directory/https://www.danfry.net/blog/vps-error-unable-to-create-cgroup-for-vm-no-such-file-or-directory/How to resolve the KVM error 'Unable to create cgroup for vm: No such file or directory' by restarting the libvirtd daemon on Linux hypervisors.Fri, 19 Jun 2020 21:15:41 GMThttps://www.danfry.net/blog/fun-linux-terminal-utilities-asciiquarium-sl-aafire/https://www.danfry.net/blog/fun-linux-terminal-utilities-asciiquarium-sl-aafire/A fun collection of classic terminal toys and ASCII animations: Asciiquarium, Steam Locomotive (sl), burning fire (aafire), and Star Wars via telnet.Mon, 18 May 2020 12:00:00 GMThttps://www.danfry.net/blog/rip-john-h-conway-creator-for-the-game-of-life/https://www.danfry.net/blog/rip-john-h-conway-creator-for-the-game-of-life/Honoring the legacy of mathematician John Horton Conway, creator of the Game of Life cellular automaton and combinatorial game theory.Sun, 12 Apr 2020 21:48:53 GMThttps://www.danfry.net/blog/fail2ban-essential-ssh-jails-debian-ubuntu/https://www.danfry.net/blog/fail2ban-essential-ssh-jails-debian-ubuntu/How to configure Fail2ban on Debian and Ubuntu servers with custom SSH jail rules, IP whitelisting, and quick CLI commands to manage banned IPs.Tue, 25 Feb 2020 13:20:00 GMThttps://www.danfry.net/blog/happy-twenty-twnenty/https://www.danfry.net/blog/happy-twenty-twnenty/New Year greetings and brief reflections entering 2020 with upcoming infrastructure and coding plans.Fri, 10 Jan 2020 00:00:57 GMThttps://www.danfry.net/blog/how-to-clear-ram-memory-cache-buffer-and-swap-space-on-linux/https://www.danfry.net/blog/how-to-clear-ram-memory-cache-buffer-and-swap-space-on-linux/Simple terminal commands to safely drop page cache, dentries, inodes, and reset swap memory on Linux servers via SSH.Wed, 08 Jan 2020 13:56:02 GMThttps://www.danfry.net/blog/jitsi-meet-logo-and-text-change/https://www.danfry.net/blog/jitsi-meet-logo-and-text-change/How to customize the logo, watermark, and UI text on a self-hosted Jitsi Meet video conferencing server by editing interface_config.js.Wed, 04 Dec 2019 14:24:54 GMThttps://www.danfry.net/blog/creating-a-simple-systemd-service-unit-linux/https://www.danfry.net/blog/creating-a-simple-systemd-service-unit-linux/How to create a custom systemd service unit on Linux to keep Python, Node.js, or Bash scripts running in the background with auto-restart on crash.Wed, 18 Sep 2019 16:45:00 GMThttps://www.danfry.net/blog/rebuild-cpanel-roundcube-database/https://www.danfry.net/blog/rebuild-cpanel-roundcube-database/How to fix corrupted SQLite or MySQL Roundcube webmail databases on cPanel servers using the convert_roundcube_mysql2sqlite and rebuild scripts.Tue, 21 May 2019 20:03:03 GMThttps://www.danfry.net/blog/three-sends-pornographic-marketing-text-to-the-subscriber-base/https://www.danfry.net/blog/three-sends-pornographic-marketing-text-to-the-subscriber-base/Analysis of a mobile marketing blunder where UK telecom provider Three accidentally sent adult promotional SMS messages to its customer base.Thu, 24 Jan 2019 11:46:28 GMThttps://www.danfry.net/blog/how-to-play-directx-and-vulkan-games-under-linux/https://www.danfry.net/blog/how-to-play-directx-and-vulkan-games-under-linux/Complete guide to running Windows DirectX 9/11/12 and Vulkan games on Linux using Wine, DXVK, VKD3D, Lutris, and Valve's Proton.Wed, 23 Jan 2019 21:43:06 GMThttps://www.danfry.net/blog/what-is-dns-flag-day-1st-feb-2019/https://www.danfry.net/blog/what-is-dns-flag-day-1st-feb-2019/Explaining DNS Flag Day 2019: major DNS providers and software vendors dropping EDNS workarounds to enforce strict RFC protocol compliance.Mon, 21 Jan 2019 13:52:40 GMThttps://www.danfry.net/blog/learn-war-games-hacking-pen-testing-and-web-application-security-testing/https://www.danfry.net/blog/learn-war-games-hacking-pen-testing-and-web-application-security-testing/Top platforms and interactive war games for learning ethical hacking, penetration testing, and web application security skills.Tue, 15 Jan 2019 23:27:46 GMThttps://www.danfry.net/blog/first-aid-rapid-response/https://www.danfry.net/blog/first-aid-rapid-response/Essential first aid principles, patient assessment steps, and rapid response guidance for handling medical emergencies before emergency services arrive.Tue, 08 Jan 2019 20:15:42 GMThttps://www.danfry.net/blog/eu-funding-bug-bounties-for-open-source-projects-in-2019/https://www.danfry.net/blog/eu-funding-bug-bounties-for-open-source-projects-in-2019/The European Commission funds bug bounties on major open source projects including VLC, KeePass, 7-Zip, Apache Tomcat, and PuTTY through HackerOne.Mon, 07 Jan 2019 11:25:22 GMThttps://www.danfry.net/blog/pam-panic-linux-authentication-for-people-in-distress/https://www.danfry.net/blog/pam-panic-linux-authentication-for-people-in-distress/How pam_panic provides a duress authentication module for Linux that wipes sensitive keys or triggers defensive scripts if a duress password is typed.Sat, 29 Dec 2018 13:01:53 GMThttps://www.danfry.net/blog/raspberry-pi-pir-movement-detection-cctv-security-system/https://www.danfry.net/blog/raspberry-pi-pir-movement-detection-cctv-security-system/Building a standalone DIY security camera using a Raspberry Pi, an HC-SR501 PIR motion sensor, and automated snapshot capture with email alerts.Sat, 29 Dec 2018 00:54:42 GMThttps://www.danfry.net/blog/command-conquer-and-red-alert-1-remastered/https://www.danfry.net/blog/command-conquer-and-red-alert-1-remastered/EA and Petroglyph announce 4K remasters of Command & Conquer: Tiberian Dawn and Red Alert with original Westwood Studios team members and Frank Klepacki.Thu, 15 Nov 2018 11:43:33 GMThttps://www.danfry.net/blog/warcraft-iii-reforged/https://www.danfry.net/blog/warcraft-iii-reforged/Blizzard announces Warcraft III: Reforged at BlizzCon 2018, featuring rebuilt 4K graphics, updated cutscenes, and 62 single-player missions.Sat, 10 Nov 2018 10:46:13 GMThttps://www.danfry.net/blog/winamp-is-coming-back-in-2019-and-will-be-whipping-more-llamas-ass/https://www.danfry.net/blog/winamp-is-coming-back-in-2019-and-will-be-whipping-more-llamas-ass/Radionomy announces a new modernized version of the classic Winamp media player with updated audio streaming and cloud connectivity.Sat, 20 Oct 2018 10:56:05 GMThttps://www.danfry.net/blog/smart-mirror/https://www.danfry.net/blog/smart-mirror/DIY Smart Mirror hardware build log using a two-way glass mirror, Raspberry Pi display module, and customizable dashboard widgets.Sat, 30 Jun 2018 23:38:47 GMThttps://www.danfry.net/blog/bash-flip-coin-random-passwords-dev-urandom/https://www.danfry.net/blog/bash-flip-coin-random-passwords-dev-urandom/Two handy Linux shell one-liners using /dev/urandom: true entropy coin flipping and generating clean random passwords directly from the CLI.Wed, 20 Jun 2018 12:00:00 GMThttps://www.danfry.net/blog/cpanel-professional-certification-free/https://www.danfry.net/blog/cpanel-professional-certification-free/How to earn the official cPanel Professional Certification (CPP) for free through cPanel University, covering server administration fundamentals.Tue, 12 Jun 2018 14:20:06 GMThttps://www.danfry.net/blog/sans-forgetica/https://www.danfry.net/blog/sans-forgetica/A look at Sans Forgetica, a typeface designed by RMIT University researchers that uses desirable difficulty principles to improve memory retention.Sat, 24 Mar 2018 00:29:15 GMThttps://www.danfry.net/blog/clearing-minecraft-server-lag/https://www.danfry.net/blog/clearing-minecraft-server-lag/Troubleshooting and fixing lag on modded Minecraft Forge and Spigot servers by diagnosing chunk generation, flowing liquids, and memory leaks.Sun, 04 Feb 2018 16:37:56 GMThttps://www.danfry.net/blog/accessing-whm-without-root-password/https://www.danfry.net/blog/accessing-whm-without-root-password/How to log into cPanel Web Host Manager without a root password by generating a temporary user session URL via the whmapi1 command line tool in SSH.Fri, 02 Feb 2018 16:06:44 GMThttps://www.danfry.net/blog/clearing-stuck-exim-mail-queue-cpanel-whm/https://www.danfry.net/blog/clearing-stuck-exim-mail-queue-cpanel-whm/How to fix a jammed Exim mail queue on cPanel and WHM servers using SSH commands to inspect traffic, delete frozen messages, and reset corrupt spool locks.Wed, 15 Nov 2017 11:30:00 GMThttps://www.danfry.net/blog/enabling-spf-and-dkim-for-all-domains-whm-cpanel-server/https://www.danfry.net/blog/enabling-spf-and-dkim-for-all-domains-whm-cpanel-server/A quick SSH command to enable SPF and DKIM DNS records across all hosted cPanel accounts on a WHM server using the enable_dkim_spf script.Mon, 02 Oct 2017 15:21:02 GMThttps://www.danfry.net/blog/mini-security-certifications/https://www.danfry.net/blog/mini-security-certifications/Quick, free online cybersecurity certification courses from vendors like Fortinet, Qualys, and Cybrary to build verified infosec credentials.Tue, 26 Sep 2017 00:22:10 GMThttps://www.danfry.net/blog/openvz-container-disk-space-usage-percentage/https://www.danfry.net/blog/openvz-container-disk-space-usage-percentage/A quick Awk one-liner to list all OpenVZ / Virtuozzo VPS containers sorted by disk space with calculated percentage usage.Sun, 14 May 2017 12:00:00 GMThttps://www.danfry.net/blog/testing-vps-disk-io-speed-with-dd-and-fio/https://www.danfry.net/blog/testing-vps-disk-io-speed-with-dd-and-fio/How to accurately benchmark disk write speeds and 4K IOPS inside Linux VPS instances, KVM virtual machines, and Proxmox LXC containers using dd and fio.Fri, 22 Jul 2016 14:15:00 GMThttps://www.danfry.net/blog/dott-r-day-tentacle-remastered/https://www.danfry.net/blog/dott-r-day-tentacle-remastered/LucasArts' iconic 1993 point-and-click time-travel adventure Day of the Tentacle gets a high-res remaster by Double Fine with in-game developer commentary.Tue, 29 Mar 2016 18:55:29 GMThttps://www.danfry.net/blog/find-all-error-logs-on-a-server/https://www.danfry.net/blog/find-all-error-logs-on-a-server/A useful Linux find command to locate, sort, and inspect all error_log files across a server to troubleshoot PHP errors and disk usage.Sat, 19 Mar 2016 18:44:12 GMThttps://www.danfry.net/blog/automating-irc-network-security-in-the-2000s/https://www.danfry.net/blog/automating-irc-network-security-in-the-2000s/Looking back at mid-2000s IRC network defence: building multi-network security bots with real-time SNOTICE sniffing, Blitzed OPM lookups, and auto-G-Lines.Thu, 20 Aug 2015 14:00:00 GMThttps://www.danfry.net/blog/jurassic-park/https://www.danfry.net/blog/jurassic-park/Melodica cover of the Jurassic Park theme song that became an iconic internet classic alongside movie memorabilia.Wed, 10 Jun 2015 21:20:54 GMThttps://www.danfry.net/blog/3d-printed-whiskey-ice-cubes/https://www.danfry.net/blog/3d-printed-whiskey-ice-cubes/A look at Suntory's 3D on the Rocks campaign, creating intricate 3D-milled ice cube sculptures for whiskey using Autodesk 3D and CNC carving.Tue, 12 May 2015 11:39:56 GMThttps://www.danfry.net/blog/wordpress-security-basics/https://www.danfry.net/blog/wordpress-security-basics/Essential WordPress security practices: securing wp-admin, updating plugins and themes, enforcing strong passwords, and monitoring user accounts.Sun, 10 May 2015 08:07:07 GMThttps://www.danfry.net/blog/fixing-wordpress-insecure-mixed-content-in-posts/https://www.danfry.net/blog/fixing-wordpress-insecure-mixed-content-in-posts/How to fix insecure HTTP mixed content warnings in WordPress posts after enabling SSL using search-and-replace queries and URL updates.Fri, 24 Apr 2015 21:03:22 GMThttps://www.danfry.net/blog/growth-hacking-basics/https://www.danfry.net/blog/growth-hacking-basics/The fundamentals of growth hacking: combining data analytics, viral marketing hooks, and product experimentation to scale web traffic.Thu, 16 Apr 2015 07:56:07 GMThttps://www.danfry.net/blog/fixing-minecraft-server-issues-exception-while-updating-neighbours/https://www.danfry.net/blog/fixing-minecraft-server-issues-exception-while-updating-neighbours/How to resolve the Exception while updating neighbours crash on Minecraft servers caused by corrupt redstone, fluids, or hopper block states.Fri, 10 Apr 2015 22:51:19 GMThttps://www.danfry.net/blog/happy-april-fools/https://www.danfry.net/blog/happy-april-fools/A quick round-up of the best April Fools jokes, tech pranks, and gaming parodies from across the internet.Tue, 31 Mar 2015 23:01:13 GMThttps://www.danfry.net/blog/sexiest-looking-uptime-monitor-w-api/https://www.danfry.net/blog/sexiest-looking-uptime-monitor-w-api/Overview of StatusCake and modern uptime monitoring services featuring public status badges, REST APIs, and multi-location ping checks.Tue, 31 Mar 2015 22:17:07 GMThttps://www.danfry.net/blog/anki-flashcard-learning-on-android-ios-linux-and-windows/https://www.danfry.net/blog/anki-flashcard-learning-on-android-ios-linux-and-windows/Overview of using Anki for spaced-repetition flashcard learning across Linux, Windows, Android, and iOS with AnkiWeb cloud sync.Fri, 20 Mar 2015 00:11:08 GMThttps://www.danfry.net/blog/setting-up-rkhunter-chkrootkit-scan-email-results/https://www.danfry.net/blog/setting-up-rkhunter-chkrootkit-scan-email-results/How to automate daily rootkit and malware scans on Debian/Ubuntu servers using rkhunter and chkrootkit with daily email log reports via cron.Tue, 17 Mar 2015 10:38:57 GMThttps://www.danfry.net/blog/the-life-of-jim/https://www.danfry.net/blog/the-life-of-jim/A look at The Life of Jim, a creative character illustration and internet comic series by illustrator Chris.Mon, 16 Mar 2015 22:02:35 GMThttps://www.danfry.net/blog/tweet-when-your-followers-are-awake-know-when-they-sleep/https://www.danfry.net/blog/tweet-when-your-followers-are-awake-know-when-they-sleep/Using Sleeping Time and Twitter activity analytics to estimate follower sleeping patterns and schedule tweets for maximum engagement.Mon, 16 Mar 2015 17:04:14 GMThttps://www.danfry.net/blog/email-tester-spf-dkim-blacklisting-do-your-emails-get-to-the-inbox/https://www.danfry.net/blog/email-tester-spf-dkim-blacklisting-do-your-emails-get-to-the-inbox/How to test email deliverability, SPF records, DKIM signatures, and spam blacklist status using mail-tester.com to prevent emails hitting spam.Mon, 16 Mar 2015 10:42:19 GMThttps://www.danfry.net/blog/happy-pi-day-march-14th/https://www.danfry.net/blog/happy-pi-day-march-14th/Celebrating Pi Day on March 14th with math trivia, circle constants, and fun facts about the most famous irrational number.Sat, 14 Mar 2015 00:10:26 GMThttps://www.danfry.net/blog/happy-steak-and-bj-day-march-14th/https://www.danfry.net/blog/happy-steak-and-bj-day-march-14th/Notes celebrating March 14th as the male counterpart holiday to Valentine's Day with good food and humour.Sat, 14 Mar 2015 00:01:27 GMThttps://www.danfry.net/blog/postfix-queue-monitoring-with-mailgraph/https://www.danfry.net/blog/postfix-queue-monitoring-with-mailgraph/How to set up Mailgraph and RRDtool to generate real-time visual mail traffic graphs and queue statistics for Postfix servers on Debian and Ubuntu.Thu, 12 Mar 2015 09:03:28 GMThttps://www.danfry.net/blog/debugging-wordpress-5-first-steps/https://www.danfry.net/blog/debugging-wordpress-5-first-steps/First steps for debugging WordPress 5 and Gutenberg editor issues: enabling WP_DEBUG, checking PHP error logs, and isolating theme or plugin conflicts.Tue, 10 Mar 2015 01:30:37 GMThttps://www.danfry.net/blog/website-speed/https://www.danfry.net/blog/website-speed/How optimizing WordPress caching and assets reduced website load times under 1 second, and why page speed matters for search engine rankings.Fri, 20 Feb 2015 09:20:43 GMThttps://www.danfry.net/blog/purple-com/https://www.danfry.net/blog/purple-com/The story of Purple.com, one of the simplest and most enduring classic single-page websites on the internet since 1994.Sat, 14 Feb 2015 17:07:51 GMThttps://www.danfry.net/blog/top-places-to-find-a-remote-online-job/https://www.danfry.net/blog/top-places-to-find-a-remote-online-job/Curated list of reputable job boards and platforms for finding remote software engineering, sysadmin, customer support, and writing roles.Tue, 10 Feb 2015 14:07:30 GMThttps://www.danfry.net/blog/playing-cards-for-geeks/https://www.danfry.net/blog/playing-cards-for-geeks/A curated collection of geek-themed playing cards featuring computer science algorithms, Linux commands, web design, and retro gaming art.Sun, 08 Feb 2015 14:03:38 GMThttps://www.danfry.net/blog/dungeons-and-developers-com/https://www.danfry.net/blog/dungeons-and-developers-com/A talent tree and RPG-style skill mapper for web developers to benchmark their knowledge in HTML, CSS, JavaScript, and backend infrastructure.Tue, 03 Feb 2015 01:18:24 GMThttps://www.danfry.net/blog/happy-31st-birthday-dan-fry/https://www.danfry.net/blog/happy-31st-birthday-dan-fry/Reflections, birthday notes, and life updates celebrating turning 31, looking at career progress, health, and upcoming technical projects.Sat, 31 Jan 2015 00:00:12 GMThttps://www.danfry.net/blog/league-of-professional-system-administrators-lopsa/https://www.danfry.net/blog/league-of-professional-system-administrators-lopsa/Overview of the League of Professional System Administrators (LOPSA), professional development standards, and code of ethics for sysadmins.Wed, 14 Jan 2015 10:30:13 GMThttps://www.danfry.net/blog/sms-bombing-from-windows-cli-using-android/https://www.danfry.net/blog/sms-bombing-from-windows-cli-using-android/Security audit demonstration showing how Android debug bridge (ADB) commands on Windows CLI could automate SMS messaging and testing.Mon, 12 Jan 2015 11:46:04 GMThttps://www.danfry.net/blog/viewing-the-google-cache-on-demand/https://www.danfry.net/blog/viewing-the-google-cache-on-demand/How to quickly inspect Google's cached version of any web page on demand to retrieve lost CSS, HTML changes, or debug indexing issues.Fri, 09 Jan 2015 10:48:26 GMThttps://www.danfry.net/blog/email-notification-on-ssh-root-logins/https://www.danfry.net/blog/email-notification-on-ssh-root-logins/How to configure instant email notifications whenever someone logs into a Linux server as root via SSH using a simple .bashrc script and mailx.Wed, 07 Jan 2015 14:16:32 GMThttps://www.danfry.net/blog/understanding-basic-wordpress-seo/https://www.danfry.net/blog/understanding-basic-wordpress-seo/A beginner's guide to WordPress SEO: setting search engine friendly permalinks, optimizing post titles, meta tags, and using XML sitemaps.Tue, 06 Jan 2015 19:36:46 GMThttps://www.danfry.net/blog/seo-tips--e2-80-93-what-experienced-online-marketers-do/https://www.danfry.net/blog/seo-tips--e2-80-93-what-experienced-online-marketers-do/Core SEO strategies used by experienced marketers: organic link acquisition, technical site auditing, and conversion rate optimization.Mon, 05 Jan 2015 19:32:59 GMThttps://www.danfry.net/blog/seo-tips--e2-80-93-improving-your-rank-in-5-easy-ways/https://www.danfry.net/blog/seo-tips--e2-80-93-improving-your-rank-in-5-easy-ways/5 practical search engine optimization tips covering niche keyword research, content quality, backlink diversity, and site hierarchy.Sun, 04 Jan 2015 19:31:42 GMThttps://www.danfry.net/blog/effective-seo-tricks-to-implement--e2-80-93-quality-content-and-article-submission/https://www.danfry.net/blog/effective-seo-tricks-to-implement--e2-80-93-quality-content-and-article-submission/How to combine high-quality article content with directory submissions and contextual anchor text for sustainable organic search visibility.Sat, 03 Jan 2015 19:30:29 GMThttps://www.danfry.net/blog/building-web-2-0-backlinks--e2-80-93-the-easy-and-effective-way-to-do-it/https://www.danfry.net/blog/building-web-2-0-backlinks--e2-80-93-the-easy-and-effective-way-to-do-it/A practical approach to building web 2.0 backlinks on platforms like WordPress and Blogger with niche content to improve search rankings.Fri, 02 Jan 2015 19:29:15 GMThttps://www.danfry.net/blog/basic-seo-tips-to-remember/https://www.danfry.net/blog/basic-seo-tips-to-remember/Fundamental search engine optimization tips covering targeted keyword selection, title and content placement, and building organic backlinks.Thu, 01 Jan 2015 19:28:02 GMThttps://www.danfry.net/blog/seo-tricks--e2-80-93-getting-to-the-top/https://www.danfry.net/blog/seo-tricks--e2-80-93-getting-to-the-top/How search engine ranking algorithms evaluate on-page factors, site architecture, domain age, and authority backlinks to rank content.Fri, 12 Dec 2014 19:34:34 GMThttps://www.danfry.net/blog/should-you-buy-a-4k-tv/https://www.danfry.net/blog/should-you-buy-a-4k-tv/A practical buyer's guide comparing 4K Ultra HD resolution against 1080p, looking at viewing distance, content availability, and panel specs.Wed, 10 Dec 2014 05:10:16 GMThttps://www.danfry.net/blog/hour-of-code/https://www.danfry.net/blog/hour-of-code/The global Hour of Code initiative designed to introduce computer science and programming fundamentals to students worldwide.Mon, 08 Dec 2014 09:08:49 GMThttps://www.danfry.net/blog/wordpress-101-certification/https://www.danfry.net/blog/wordpress-101-certification/Completing the Udemy WordPress 101 course for training team members in WordPress core administration, settings, and theme customization.Wed, 03 Dec 2014 02:25:19 GMThttps://www.danfry.net/blog/welcome-to-my-new-home/https://www.danfry.net/blog/welcome-to-my-new-home/The first post on DanFry.net: launching a personal technical blog to share sysadmin guides, server troubleshooting notes, and coding experiments.Mon, 01 Dec 2014 14:57:42 GMThttps://www.danfry.net/blog/seo-tricks--e2-80-93-making-site-visibility-easier/https://www.danfry.net/blog/seo-tricks--e2-80-93-making-site-visibility-easier/Actionable ways to improve site crawlability and organic visibility through XML sitemaps, internal linking structure, and content freshness.Sun, 23 Nov 2014 19:35:56 GMT