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last [-number] [-f filename] [-t tty] [-h hostname] [-i address] [-l]
Last looks back in the wtmp file which records all logins and logouts
for information about a user, a teletype or any group of users and
teletypes. Arguments specify names of users or teletypes of interest.
If multiple arguments are given, the information which applies to any
of the arguments is printed. For example ''last root console'' would
list all of root's sessions as well as all sessions on the console ter-
minal. Last displays the sessions of the specified users and tele-
types, most recent first, indicating the times at which the session
began, the duration of the session, and the teletype which the session
took place on. If the session is still continuing or was cut short by
a reboot, last so indicates.
The pseudo-user reboot logs in at reboots of the system.
Last with no arguments displays a record of all logins and logouts, in
If last is interrupted, it indicates how far the search has progressed
in wtmp. If interrupted with a quit signal last indicates how far the
search has progressed so far, and the search continues.
limit the number of entries displayed to that specified by num-
Use filename as the name of the accounting file instead of
List only logins from hostname.
-i IP address
List only logins from IP address.
-l List IP addresses of remote hosts instead of truncated host
-t tty List only logins on tty.
-y Also report year of dates.
/var/log/wtmp -- login data base