> Markdown version of [/magazine/687-dev-digest-205-ai-vs-oss-hidden-chatgpt-features-linux-in-a-pdf](https://www.wearedevelopers.com/magazine/687-dev-digest-205-ai-vs-oss-hidden-chatgpt-features-linux-in-a-pdf). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Dev Digest 205: AI vs. OSS, Hidden ChatGPT Features, Linux in a PDF

**By:** [Daniel Cranney](https://www.wearedevelopers.com/@daniel-cranney)

**Published:** February 2, 2026

## Inside last week’s [Dev Digest 205](https://newsletter.wearedevelopers.com/205).

https://www.youtube.com/embed/iEnfnYRLjYA

😔 The end of the curl bug bounty  
📝 Agent Skills vs. Rules vs. Commands  
💬 The best hidden ChatGPT features  
📅 Weaponising calendar invites  
🟪 CSS in 2026  
🐍 Python numbers you should know  
👨‍💻 The Github Copilot SDK  
💻 Build browser extensions the easy way  
📄 Linux inside a PDF  
🤖 Fix your robots.txt or Google stops indexing  
🤷‍♂️ Why we keep trying to replace developers

🗞️ Join over 200,000 developers already subscribed to the Dev Digest to get your weekly round-up of tech news, tips and tricks, jobs, events and more, delivered to your inbox. [Subscribe here](https://wearedevelopers.com/devdigest).



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