3com MSR 20-20 참조 매뉴얼

/force: Empties the recycle bin.

Use the reset recycle-bin command to permanently remove deleted file or files 
from the recycle bin.

Unlike this command, the delete file-url command only moves files to the recycle 
bin.

# Empty the recycle bin.

<Sysname> reset recycle-bin

Clear cf:/tt.cfg ?[Y/N]:y

Clearing files from cf may take a long time. Please wait...

.

%Cleared file cf:/~/tt.cfg. 

rmdir directory

User view

directory: Name of the directory.

Use the rmdir command to remove a directory.

The directory must be an empty one. If it is not, first delete all files and 
subdirectory under it with the delete command.

# Remove directory mydir.

<Sysname> rmdir mydir

Rmdir cf:/mydir?[Y/N]:y

%Removed directory cf:/mydir. 

umount device

User view

device: Storage device name (for example flash or cf) on a device that does not 
support storage device partitioning; partition device name (for example cf0 or cf1) 
on a device supporting storage device partitioning.

Use the umount command to unmount a hot swappable storage device, such as 
a CF card or a USB device, excluding Flash. This command is effective only when 
the device is in mounted state.