LAST(1) BSD Reference Manual LAST(1)
last - indicate last logins of users and ttys
last [-n] [-f file] [-h host] [-t tty] [user ...]
Last will list the sessions of specified users, ttys, and hosts, in re-
verse time order. 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. If the session
is still continuing or was cut short by a crash or shutdown, last will so
-f file Last reads the file file instead of the default,
-n Limits the report to n lines.
-t tty Specify the tty. Tty names may be given fully or abbreviated,
for example, ``last -t 03'' is equivalent to ``last -t
-h host Host names may be names or internet numbers.
If multiple arguments are given, the information which applies to any of
the arguments is printed, e.g., ``last root -t console'' would list all
of ``root's'' sessions as well as all sessions on the console terminal.
If no users, hostnames or terminals are specified, last prints a record
of all logins and logouts.
The pseudo-user reboot logs in at reboots of the system, thus ``last
reboot'' will give an indication of mean time between reboot.
If last is interrupted, it indicates to what date the search has pro-
gressed. If interrupted with a quit signal last indicates how far the
search has progressed and then continues.
/var/log/wtmp login data base
lastcomm(1), utmp(5), ac(8)
Last appeared in 3.0BSD.
4th Berkeley Distribution June 6, 1993 1