@deckingman said in rfm - RepRapFirmware FileManager [duetbackup successor]:
I "googled" that and came up with "force deletion of everything in the root directory". That's the equivalent of a "nuke" button isn't it?
More or less. There are some protections in place but if you run
rm -rf / [note the spaces]
either as root user (admin user with full privileges in Linux) or prepend it with sudo (which will provide a regular user with root-rights) it will do exactly that. It will erase all contents of your hard-drive and depending on the configuration also of all mounted external drives. Not as fast as a giant hammer but fast enough to have made probably unrecoverable damage until you notice.