Python: get remote IP from HTTP request using the requests module

Let’s encrypt with Nginx and systemd timers for renewal

LAMP: Troubleshooting slow website with strace and lsof

Cisco ASA – Cheat Sheet

CentOS/RHEL: Installing SHOUTcast Server

How-to extend a root LVM partition online

Creating GPG keys issue on CentOS with GNOME Desktop

Regular-Expression (RegEx)

Adjusting child processes for PHP-FPM (Nginx)

MySQL: dump selected tables