Originally Posted by till
You will have to setup a jail for the user, a jail is enviroment that contains only the commands and files that the user may access. Such a jail can be created manually (which can be a quite complicated task as you have to add all dependencysof all apps as well) or you use some helper applications like jailkit to craete it.
My recommendation is to create the jail with jailkit:
Thanks a lot till. Your answear was simple, accurate and complete.