So, how do you find Linux or UNIX-like systems last reboot/shutdown date and time? The last utility will either list the sessions of specified users, ttys, and hosts, in reverse time order, or list the users logged in at a specified date and time. Each line of output contains the user name, the tty from which the session was conducted, any hostname, the start and stop times for the session, and the duration of the session.
In the enterprise Linux setup, it is necessary to keep the track of server shutdown and reboot time. Most of you may have used the shutdown / reboot command.