Linux
2025
Understanding Ansible Semaphore by Building a Hardening Audit Pipeline with Lynis, and Prometheus
1030 words·5 mins
Development
Infrastructure
Linux
Sysadmin
Building an automated Linux hardening audit pipeline using Ansible Semaphore, Lynis, and Prometheus
Building a Remote SDR “Observatory” with Proxmox and Tailscale
799 words·4 mins
Sdr
Rf
Linux
Aerospace
Radio
HomeLab
Projects
I turned an RTL-SDR dongle in my homelab into a full-time, remote-access RF observatory. This guide covers setting up a Proxmox VM as an SDR server with rtl_tcp, securing it over Tailscale, and streaming signals to GQRX from anywhere in the world.
Linux Iptables quick reference
1197 words·6 mins
Linux
Terminal
Shell
Firewall
Reference
Network
Networking
iptables in 5 Minutes: a quick cheat-sheet for quick rule edits, safe testing, and making changes stick, without tripping over firewalld, UFW, or nftables.
Bash History Expansion and Prompt Magic
471 words·3 mins
Linux
Scripting
Programming
Terminal
Bash
Shell
Interesting and useful use cases of !, #, and ? expansions in Bash
Debian Linux Post-installation setup
388 words·2 mins
Linux
Setup
Debian Linux post-installation checklist: Basic installations and configurations for Terminals, Networking, utilities, etc.
SSH Tunneling and Port-Forwarding guide
592 words·3 mins
Ssh
Reference
Networking
Security
Port-Forwarding
Tunneling
Linux
Sysadmin
A brief SSH tunneling & proxy methods guide - Dynamic, Remote & Local port-forwarding. Tunneling and Hardening resources.
2024
SSH Config File - Quick Connection
382 words·2 mins
Linux
Shell
Sysadmin
Using aliases with SSH for quick & easy connections
PNG to Favicon.ico with ffmpeg
134 words·1 min
Web
Website
Development
Linux
Tools
Reference
Quick how-to: Create favicon.ico from PNG by using FFMPEG
2021
Linux User switching with their own password
290 words·2 mins
Reference
Linux
Sysadmin
A procedure to allow users to switch (su) to another user, using their own password instead of the “target” user password
Running NetworkMiner on Linux
524 words·3 mins
Reference
Linux
Forensics
Network
Using Mono utility to run NetworkMiner, a Windows utility for PCAP analysis
YAVG: Yet Another Vim Guide
1539 words·8 mins
Vim
Linux
Shell
Bash
Development
Setup
Programming
Reference
Spending some time learning Vim to save time