This is an OpenBSD 4.5 server of mine with only basic packages installed:
Code:
# du -h --max-depth=1
4.0K ./tmp
1.1G ./usr
3.2M ./etc
56K ./dev
4.0K ./home
932K ./root
4.0K ./mnt
14M ./sbin
6.1M ./var
4.0K ./altroot
4.0K ./stand
7.0M ./bin
1.1G .
You may strip that down even more if you like...