Users online in cgi

Hello,

I want to creat a cgi script to display the "xx users online" for a site of a friend, I want to do it in cgi not php, any ideas? and with no use of db.

Thanks in advance!

here is one

http://akcansoft.virtualave.net/scripts/aktif-cgi.htm

Just had a read.. thats really useful for another site I am doing.. Cheers scoutt. :)