last

View the last logged in users.

• View last logins, their duration and other information as read from `/var/log/wtmp`:

last

• Specify how many of the last logins to show:

last -n {login_count}

• Print the full date and time for entries and then display the hostname column last to prevent truncation:

last -F -a

• View all logins by a specific user and show the IP address instead of the hostname:

last {username} -i

• View all recorded reboots (i.e., the last logins of the pseudo user "reboot"):

last reboot

• View all recorded shutdowns (i.e., the last logins of the pseudo user "shutdown"):

last shutdown

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