I'm running Ubuntu 10.04. Is there a way I can get a daily report of who has logged onto the box, what time, and even - this may be asking too much - a report of the commands they used? This is a low-usage box and so I think this would be a nice way to see what activity is happening on it.
Along these same lines, I heard it was not possible to track when things are done on the box via non-interactive shells, such as rsync or just remotely executing single commands via ssh. Is that true, or is there a way to log and track this as well?