Tag: linux

Decode the postgresql:// connection string, host, port, database, SSL mode, and the gotchas that cause connection refused at deploy time.

LXC/LXD runs full Linux environments in lightweight containers, faster to spin up than VMs and perfect for home lab service isolation.

Talos OS is an immutable, API-driven OS designed purely for running Kubernetes, no SSH, no package manager, pure GitOps.

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

journalctl, grep, awk, and tail -f, read your Linux logs like a pro and find the error before it pages you at 3 AM.

Disaster recovery for your Linux home lab, tiered backups, a restic script that actually runs, restore drills, and the gotchas that bite at 2 AM.

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

Set, verify, and sync your timezone in Ubuntu using timedatectl, one command to fix the clock on a newly provisioned server.

Build a video slideshow from static images with a voiceover track using FFmpeg, concat filters, fade transitions, and audio sync.

mogrify from ImageMagick batch-processes images, resize, convert, compress, and apply effects to entire directories at once.

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

RSA SSH keys are aging out. Ed25519 is the modern default: generate one in seconds, secure it with ssh-agent, add FIDO2 hardware keys, and audit legacy keys safely.