Tag: linux

Understanding the regreSSHion Vulnerability in OpenSSH

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

Multiple Actions with a Single docker exec Call

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

Mastering xargs in Linux

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

FFmpeg: Advanced Video & Audio Manipulations

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

FFmpeg: Comprehensive Audio Processing Techniques

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

Mastering Vim: Essential Commands and Tips

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

Tmux for Streamlining Dev Workflow

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

Understanding and Optimizing Performance in Proxmox VE

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

LVM The Linux Sysadmin’s Guide to Flexible Storage

LVM lets you resize volumes, add disks, and take snapshots without repartitioning — PVs, VGs, and LVs explained with real commands.

Docker vs Podman: Key Differences

Docker needs a daemon; Podman doesn't. Compare architecture, rootless support, Compose compatibility, and which one belongs in your workflow.

SSH Tunneling: A Secure Conduit for Your Data

SSH tunnels forward ports over encrypted connections — local forwarding, remote forwarding, and dynamic SOCKS proxy explained.

User and Group Management in Linux

Create, modify, and delete users and groups on Linux — useradd, usermod, groupadd, sudo access, and /etc/passwd explained.