Display a list of the most recent logins, taken from the file /var/log/wtmp by default. If you specify a tty number or username, the output displays only the logins for that user or terminal.
Display the hostname from which logins originated in the last column.
For remote logins, display both IP address and hostname.
Get the list of logins from filename. The default source is /var/log/wtmp.
Like -d, but display the IP address in numbers-and-dots notation.
Choose how many lines of logins to display. Thus, last −7 or last -n 7 displays seven lines.
Do not show the hostname.
Display shutdown messages and runlevel messages.