/symbian3/os/
drwxr-xr-x [up]
drwxr-xr-x boardsupport
drwxr-xr-x bt
drwxr-xr-x buildtools
drwxr-xr-x cellularsrv
drwxr-xr-x commsfw
drwxr-xr-x deviceplatformrelease
drwxr-xr-x devicesrv
drwxr-xr-x graphics
drwxr-xr-x imagingext
drwxr-xr-x kernelhwsrv
drwxr-xr-x lbs
drwxr-xr-x mm
drwxr-xr-x networkingsrv
drwxr-xr-x osrndtools
drwxr-xr-x ossrv
drwxr-xr-x persistentdata
drwxr-xr-x security
drwxr-xr-x textandloc
drwxr-xr-x usb
drwxr-xr-x wlan
drwxr-xr-x xmlsrv