Tag: linux

socat wires TCP, UDP, Unix sockets, files, and serial ports together. Port forwarding, OpenSSL tunnels, traffic capture, this is netcat with superpowers.

List every user and group on Linux with /etc/passwd, /etc/group, and getent, see who is logged in, and separate system accounts from normal users by UID.

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.

Your logs are in journald, not /var/log. journalctl queries that work, awk patterns that hold up, and five popular one-liners that quietly return nothing.

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.