How can I get an e-mail sent to me when a user logs into my server?
Hey guys, I have just given a few of my friends access to my debian server. I want to be e-mailed when they log in so that I am aware of them being on my server. They are only able to login using SSH. This will also be useful so that I know who messed something up when strange things start happening.
Please help me out in finding a utility that can do this for me. Thanks for the help in advance!