Hehe...

BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ $ root


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Nokia-N900-51-1:~# df -h
Filesystem Size Used Available Use% Mounted on
rootfs 227.6M 149.5M 73.9M 67% /
ubi0:rootfs 227.6M 149.5M 73.9M 67% /
tmpfs 1.0M 72.0k 952.0k 7% /tmp
tmpfs 256.0k 80.0k 176.0k 31% /var/run
none 10.0M 80.0k 9.9M 1% /dev
tmpfs 64.0M 4.0k 64.0M 0% /dev/shm
/dev/mmcblk0p2 2.0G 1.7G 189.1M 90% /home
/home/opt 2.0G 1.7G 189.1M 90% /opt
/opt/pymaemo/usr/lib/python2.5
2.0G 1.7G 189.1M 90% /usr/lib/python2.5
/opt/pymaemo/usr/share/pyshared
2.0G 1.7G 189.1M 90% /usr/share/pyshared
/opt/pymaemo/usr/lib/pyshared
2.0G 1.7G 189.1M 90% /usr/lib/pyshared
/opt/pymaemo/usr/share/python-support
2.0G 1.7G 189.1M 90% /usr/share/python-support
/opt/pymaemo/usr/lib/python-support
2.0G 1.7G 189.1M 90% /usr/lib/python-support
/dev/mmcblk0p1 27.0G 2.7G 24.3G 10% /home/user/MyDocs
/dev/mmcblk1p1 7.6G 2.7G 4.9G 35% /media/mmc1
Nokia-N900-51-1:~#