The original title is "Setting Up an Android Phone as a Linux Learning Lab with Termux"

Short summary

A developer documents turning an old Android phone into a Linux learning lab using Termux, avoiding VPS costs. The post covers installing OpenSSH, configuring key-based authentication, and running a Node.js API with a health check endpoint. It's the first in a planned series covering shell scripting, Nginx, CI/CD, and more.

• •Set up Termux on Android as a free Linux lab替代VPS
• •Configured SSH key-based auth and ran a Node.js API on the phone
• •Series will continue with permissions, Nginx, reverse proxy, and CI/CD topics

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