I'm sorry I don't understand your request, please elaborate what exactly do you want to achieve? Do you want to set it up here on oxwall.org or you want your url to be the same demo.site.com? 

thanks for your reply, i  want make a page like demo.oxwall.org , but at our server (persianoxwall.ir)

:-)

You need to do changes in .htaccess try the solutions provided here

OK thanks

Quote from ross You need to do changes in .htaccess try the solutions provided here

i want install an oxwall demo site that reset every 24 hours, the link is about creating sub domain!

You need to write a server script. 

We have two websites. 

For example demo.oxwall.org and demo2.oxwall.org

demo.oxwall.org resets every hour. 

the scripts dumps database for demo.oxwall.org

copies the database from demo2.oxwall.org

then changes the files for demo.oxwall.org from demo2.oxwall.org, resets config. php file 

and set the correct permissions for the folders. 

OK i got it