Copyright (c) 1980 Regents of the University of California.
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@(#)last.1 6.2 (Berkeley) 12/10/86

C 4 last - indicate last logins of users and ttys last [-f file] [-#] [users ...] [ttys ...] [hosts ...] Last will list the sessions of specified users, ttys, and hosts, in reverse 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 reboot, last will so indicate.

Last reads the file file, or by default, /usr/adm/wtmp. The -# option limits the report to # lines.

Other arguments specify users, ttys or hosts of interest. Tty names may be given fully or abbreviated, e.g., "last 03" is equivalent to "last tty03". Host names should not include domain information, and may be internet numbers. If multiple arguments are given, the information which applies to any of the arguments is printed, e.g., "last root console" would list all of "root's" sessions as well as all sessions on the console terminal. If no users 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 progressed. If interrupted with a quit signal last indicates how far the search has progressed and then continues.

/usr/adm/wtmp login data base

lastcomm(1), utmp(5), ac(8) Last does not distinguish between different types of information. The command "last ucbvax" will report all sessions of the user "ucbvax" as well as all logins from the host "ucbvax.berkeley.edu". Howard Katseff