How to find the total size of a dirctory tree in Solaris

Hi,

I want to find the total size of some directory trees in my solaris 9 machine.

Is there a command or utility I can use to do it. Please let me know if there is
any way.

Thanks
Akheel

# du -ks /top/dir

This will give a summary in kilobytes of disk usage for /top/dir and all its subordiantes.

For more info...

# man du

Cheers
ZB