Claude Code on a FreeBSD Desktop: Plasma, xrdp, the Linuxulator and One Very Confusing PATH

The plan was boring on purpose: a FreeBSD desktop VM on my Proxmox cluster, KDE Plasma, reachable remotely, so I have a FreeBSD workstation I can open from any machine. Something to live in, not something to admire. Then I wanted Claude Code on it. Claude Code ships no FreeBSD binary. It does ship a Linux binary, and FreeBSD has been running Linux binaries through the Linuxulator for decades. I had already done that for a Factorio server, so how hard could an AI coding agent be? Not very hard, as it turned out. But the road there had four detours, each one teaching something more general than “how to install X on Y”. And the ending was better than the plan: once the agent ran stably, I asked it to lock down the network of the very machine it was running on, over the very SSH session it could have cut. It handled that with a dead-man’s switch and asked me to verify from a fresh connection before committing anything. Here is the final stack, from the metal up: Proxmox VE (QEMU/KVM) └──…