Tag: linux

regreSSHion (CVE-2024-6387) is a remote code execution bug in OpenSSH, what it is, which versions are affected, and how to patch fast.

Run multiple commands in one docker exec call by piping a heredoc to the container shell, chain dependent steps and skip repeated container roundtrips.

xargs turns stdin into arguments, build complex pipelines, run parallel jobs, and handle filenames with spaces without breaking everything.

Advanced FFmpeg techniques, filter graphs, stream mapping, subtitle burning, speed adjustment, and batch processing scripts.

Shell globbing breaks inside docker exec because of how args are parsed, here's how to pass wildcards and asterisks correctly.

FFmpeg audio processing, normalize levels, convert formats, mix tracks, extract audio from video, and apply filters from the command line.

vim survival guide, modes, motions, search and replace, macros, splits, and the config tweaks that make it actually enjoyable to use.

Master tmux for dev work: sessions, windows, panes, layout scripting, hooks, and pane syncing, the commands that turn one terminal into many.

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

Squeeze more out of Proxmox VE, CPU pinning, memory ballooning, IO threads, virtio drivers, and storage tuning for faster VMs.

Go beyond basic UFW rules, rate limiting, geo-blocking, application profiles, logging, and before.rules tricks for serious firewall hardening.

UFW makes iptables manageable, allow and deny rules, app profiles, default policies, and the 5-minute setup for any new Linux server.