Use the maps command to check on whether or not a map or several maps are in use.

Example: 'maps brest

The headers shown are:

Current time is = current real time on the server

Path = the map file path on the server.
Pl = players.
PlM = players on map.
IM = in memory.
TO = timeout until the map is saved to disk.
Dif = map difficulty.
Reset = real time on server when the map will reset.
