So, revisiting this in 2026 since this is the first result on Google for "mosh unraid". This is how I got mosh-server working on Unraid 7.2.3 Install "User Scripts" plugin Settings => User Scripts => Add New Script => "install_mosh" Click install_mosh gear icon => Edit Script => Enter the following => Save #!/bin/bash
wget -q -O /usr/bin/mosh-server "https://github.com/blinksh/mosh-static-multiarch/releases/download/1.4.0%2Bblink-17.3.0/mosh-server-1.4.0+blink-17.3.0-linux-amd64"
chmod +x /usr/bin/mosh-serverClick Schedule Disabled next to the script in the list of scripts and set it to At Array Start Click Apply, Click Run Script