Lastlog

lastlog is a program available on most Linux distributions. It formats and prints the contents of the last login log file,  (which is a usually a very sparse file), including the login name, port, and last login date and time. It is similar in functionality to the BSD program last, also included in Linux distributions; however, last parses a different binary database file ( and  ).

Usage
Lastlog prints its output in column format with login-name, port, and last-login-time of each and every user on the system mentioned in that order. The users are sorted by default according to the order in  However, it can also be used to modify the records kept in.