Is it possible to see the login history, i mean to see if someone has used the computer in my absence and when he used it .
if it is possible, where can i get the log ?
if not, is there a program that logs all the logins and their time ?
Ubuntu – How to see Login history
loglogin
Best Answer
That contains a lot more than just plain logins (sudo calls, etc) but logins are in there too. It's protected so you'll need to be root to read it: