This means you can do all kinds of stuff on it and your normal one won't be harmed.
When you reboot, it's gone and you'll get back to the normal filesystem.
Download:
pastebin get Eu9QJScD tfs
Usage:
To run it, simply type:
tfsIf you want to import the files you already have on your normal filesystem:
tfs -iNote: this only copies the files into the RAM-filesystem so whatever you do to it, it won't affect your real filesystem.
Example GIF: