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linux

Linux tutorials and practical guides covering commands, servers, shell usage, package management, permissions, networking and open-source systems.
29 posts
linux
Linux Signals Explained — SIGTERM, SIGKILL and Process Control
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linux • 7 min read
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Linux Signals Explained — SIGTERM, SIGKILL and Process Control

# Linux Signals Explained — SIGTERM, SIGKILL and Process Control Pressing `Ctrl+C` looks simple until the day it stops working. You hit it in a terminal. One Python script exits immediately. A Docker container hangs for ten seconds before disappearing. A runaway process ignores you completely unti…
Techie Mike
Techie Mike •
The CISA GitHub Leak: Homelab Security Lessons for Self-Hosters
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security • 7 min read
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The CISA GitHub Leak: Homelab Security Lessons for Self-Hosters

# The CISA GitHub Leak: Homelab Security Lessons for Self-Hosters In May 2026, researchers discovered a public GitHub repository maintained by a CISA contractor containing credentials, deployment material, internal documentation, and cloud infrastructure details, as detailed in [Krebs on Security's…
Techie Mike
Techie Mike •
TLS Certificates for Internal Services: HTTPS Inside Your Homelab
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security • 6 min read
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TLS Certificates for Internal Services: HTTPS Inside Your Homelab

# TLS Certificates for Internal Services: HTTPS Inside Your Homelab Most homelab TLS setups stop at the front door. You put Caddy, Nginx, or Traefik in front, get a valid certificate for `app.example.com`, and call it done. From the browser to the reverse proxy, everything is encrypted. From the r…
Techie Mike
Techie Mike •
Beyond Ollama: 3 Homelab AI Tools Worth Trying Next
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developer tools • 12 min read
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Beyond Ollama: 3 Homelab AI Tools Worth Trying Next

# Beyond Ollama: 3 Homelab AI Tools Worth Trying Next Ollama is the tool I recommend when someone wants their first local model running tonight. It is simple, fast to understand, and good enough for a lot of homelab jobs. Pull a model, hit an API, wire up Open WebUI, done. I already covered that fu…
Techie Mike
Techie Mike •
Self-Hosted AI Security: What Every Ollama User Should Know
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security • 7 min read
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Self-Hosted AI Security: What Every Ollama User Should Know

# Self-Hosted AI Security: What Every Ollama User Should Know In May 2026, a GitHub issue reported that two production Ollama servers had been compromised by an attacker who pulled six malicious models onto them. No authentication check, no registry allowlist, no integrity verification. Just a curl…
Techie Mike
Techie Mike •