Is there something similar to chroot, but for users? We are about to grant access to our servers for a client and would like them to see only the directories we allow.

I'm making a game where users can write Python programs to control robots that fight each other. Every turn (in a thousand-turn game) their script will be run on my server to determine the robot's ...

There is a problem when I init a PostgreSQL database in a FreeBSD jail. I found an article about the problem. I tried its advice but I didn't have any luck and I don't know why. There is t...

I'm writing a web server based on Python which should be able to execute "plugins" so that functionality can be easily extended. For this I considered the approach to have a number of folders (one...

We have a Java IRC application where users are allowed to execute arbitrary PHP and get the result. Here is one example of what this is used for: btc: <php>$btc = json_decode(file_get_conten...

What's the difference between a Linux chroot jail and a FreeBSD jail? Are they synonyms in modern systems? Is one more secure than the other? Is one more flexible?

I setup a git server over ssh as http://blog.commonthread.com/post/1034988660/setting-up-a-git-server However, I am still able to access the server by ssh and see all the folders on the server. ...