Do you know what your Proxmox server is actually running?

Just spent some time figuring it out. Figure I'd put it here for anybody else who may care and for future reference for myself in case I am on a system without access to my normal notes. There are two ...

Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.

Zellij is a modern terminal multiplexer similar to Tmux, offering a clear, organized interface and efficient session management.