Originally Posted by ust
I would like to have a special user that can su all general user , but this special user do not have other root permission but only can do su , is that possible to have such user ?
Is it possible for you to even say "thanks" after people help you, post a solution after you get help, or even acknowledge people replied to you?? Because you've NEVER done that so far.
Read the man page on the sudo command, and pay attention to the -u option. Set the sudoers file up accordingly.