Four Fundamental Subspaces
This is the Big Picture adopted from Introduction to Linear Algebra by Prof. Gilbert Strang.
How to get remote shell access within browsers using Shellinabox on Debian Buster
Shellinabox (aka “shell in a box”) provides a web-based interface similar to SSH, which can be useful if no SSH clients are present.
How to set up a basic chroot jail on Debian Buster – Part I: Nginx
It’s all about security.
There are many ways to do a matrix multiplication.
How to set up a Wikipedia mirror with Nginx on Debian Buster and Arch Linux
It is worthwhile pointing out at the very beginning that setting up live mirrors for websites like Wikipedia is strongly discouraged. As described in here, live mirrors put more strains on WMF servers. However, if it is intended for private use, here are the steps to create such mirrors on your own server. Use at your own risks.
How to install WordPress on Arch Linux with Nginx and uWSGI
Though ArchWiki has a page that explains the installation process of WordPress, it doesn’t cover the configuration for Nginx. (Yes, I prefer Nginx to Apache.) Fortunately, the NGINX wiki has provided some good examples. Here we combine them with uWSGI to avoid modifying global
php.ini so it remains intact and secure.