@option{-g} for @option{-p}.
Incidentally, these commands work by passing special commands
-@command{put} and @command{get} on the kernel's command line and copying
+@command{extract} and @command{append} on the kernel's command line and copying
to and from a special simulated ``scratch'' disk. If you're very
curious, you can look at the @command{pintos} script as well as
@file{filesys/fsutil.c} to learn the implementation details.