How to Monitor Disk I/O Performance in Linux with iostat and iotop
Diagnose storage bottlenecks and process latency in Linux using iostat and iotop with battle-tested metrics, production sysctl tuning, and triage playbooks.
Linux & SysAdmin
Linux server administration, command tutorials, systemd daemons, web servers (Nginx/Apache), backups, and Docker containers.
Configuring Nginx as a Reverse Proxy for Node.js Applications
Master production-grade Nginx reverse proxy architecture for Node.js. Includes complete configs, TLS hardening, WebSocket proxying, and benchmark data.
How to Host a Static Website with Caddy Server
Master Caddy Server for hosting static sites with automated HTTPS, HTTP/3, and Zstandard compression. Learn enterprise configurations and Linux kernel tuning.
Linux File Permissions Explained: chmod, chown, and ACLs
Master Linux file security across traditional UGO permissions, ownership models, and POSIX ACLs. Learn exact chmod, chown, and setfacl production patterns.
Managing Multiple PHP Versions with PHP-FPM and Nginx
Master multi-version PHP architectures with Nginx and PHP-FPM. Learn UNIX domain socket isolation, virtual host routing, and kernel performance tuning.
Monitoring Server Health in Real-Time with Netdata
Master Netdata installation on Linux for per-second observability. Configure dbengine v2, eBPF telemetry, and secure parent-child streaming architecture.
Self-Hosting Bitwarden (Vaultwarden) on a VPS
Deploy and harden a high-performance Vaultwarden password management server on a Linux VPS. Learn production Docker setups, reverse proxies, and backup routines.
Using sed for Advanced Text Processing in Bash
Master advanced stream editing in Bash with production sed command examples. Optimize text pipelines, manipulate multiline buffers, and automate configs.
Linux Process Management: top, htop, and atop Explained
Master Linux process management with this deep-dive into top, htop, and atop. Learn real-time triage, kernel accounting, and post-mortem analysis.
How to Use screen and tmux for Persistent Terminal Sessions
Master persistent Linux terminal sessions with screen and tmux. Eliminate dropped SSH connections and streamline production DevOps workflows with ease.