How does sudo work internally? How is it possible that it can become root without having the root password, unlike su? What syscalls, etc. are involved in the process? And why is however sudo does it ...
I want one administrator to be able to edit the /etc/fstab file but one administrator to not be able to edit the fstab file. Both administrators need access to all other administrative tasks. Is ...
There are two unix accounts A and B.I want to execute a unix command from account B such that the command behaves as if it was executed from account A .How can I do this ? The problem here is that ...
I have a rackspace server and I'm having problems with configuration. I need to lock it down and throw away the key, because right now I can only login with root to do anything substantial. I also am ...
I would like to have the root account in safety even if my unprivileged user is compromised. On Ubuntu you can only use sudo for "security reasons" by default. However I am not sure it is any safer ...