Tag: linux

Move Docker images between hosts without a registry using docker save and docker load — air-gapped deployments made simple.

The official, no-nonsense way to install Docker Engine on Ubuntu and Debian — repository setup, key import, and one command to verify it works.

Generate code documentation with Doxygen without installing it — run it from a Docker container and get HTML docs from any codebase.

Bash tricks that save keystrokes — history expansion, brace expansion, process substitution, and the shortcuts your fingers will thank you for.

Find your Linux distro version, kernel version, and architecture with uname, lsb_release, /etc/os-release, and hostnamectl.

Harden your home lab against real threats — SSH hardening, fail2ban, network segmentation, backups, and preparing for when things go wrong.

Fix 'Argument list too long' errors in bash when cp or rsync chokes on thousands of files — xargs and find-based workarounds.

Monitor Linux servers with htop, iostat, netstat, vmstat, and Prometheus — pick the right tool for CPU, memory, disk, and network issues.

OpenConnect replaces the bloated AnyConnect client on Linux. Run ocserv for a self-hosted Cisco-compatible VPN server — no 200MB installer required.

Speed up Ansible playbooks with pipelining, forks, fact caching, and async tasks — stop watching the spinning wheel on every play.

By default bash history is lost across multiple terminal sessions. Fix it with HISTAPPEND and PROMPT_COMMAND so nothing gets overwritten.

Proxychains-ng, Tor, and VPN+Tor combos tested honestly: which setups actually anonymize traffic and which are security theater you should stop trusting.