R

read only root

A setup script and accompanying files to set up an overlay root filesystem on a Debian like OS on a RaspberryPi or similar computer. But it even works on a standard Debian system. Overlay root means the underlying files system (usually an SD card on a RaspberryPi) is mounted read only and all changes happen in a ram disk overlay. That way, you can power off your Pi (unplug power cable) any time without risking file system corruption on the SD card.