Recovered Unix v4 tape quickly yields a usable operating system — nostalgia addicts can now boot up Unix v4 in a browser window

A recovered Unix v4 tape from the University of Utah can now be booted up in a browser window, allowing nostalgia addicts to experience the operating system. The emulator runs a Linux emulator first, which then calls up the SimH project's PDP-11 emulator with bootstrap instructions. Users will encounter challenges such as having to type out full commands like ls -la instead of shortcuts, and using ed for file editing as there is no nano or vi. Navigation shortcuts like arrow keys are non-existent, and unique commands are required for actions like erasing characters. The emulation is made possible by the Linux-native SimH emulator running in the JSLinux emulator with a basic version of Alpine Linux.