LAST(1)                 System General Commands Manual                 LAST(1)

NAME
     last - indicate last logins of users and ttys

SYNOPSIS
     last [-cDsT] [-number] [-f file] [-h host] [-n number] [-t tty]
          [-d [[[CC]YY]MMDD]hhmm[.SS]] [user ...]

DESCRIPTION
     The last utility will either (1) list the sessions of specified users,
     ttys, and hosts, in reverse time order, or (2) list the users logged in
     at a specified snapshot date & time in reverse time order.  Each line of
     output contains the user name, the tty from which the session was con-
     ducted, 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 indicate.

     The options are as follows:

     -number    Same as the -n option (deprecated).

     -c         Calculates the total time displayed and prints it after the
                output.

     -f file    last reads the file file instead of the default,
                /var/adm/wtmpx.

     -D         Display the domainname. The default is to not display the
                domainname.

     -n number  Limits the report to number lines.

     -s         Display time values in seconds since the epoch, instead of
                formatted dates.

     -t tty     Specify the tty.  tty names may be given fully or abbreviated,
                for example, last -t 03 is equivalent to last -t tty03.

     -h host    host names may be names or internet numbers.

     -T         Display better time information, including seconds.

     -d date    Specify the snapshot date & time.  All users logged in at the
                snapshot date & time will be reported.  This may be used with
                the -f option to derive the results from stored wtmp files.
                When this argument is provided, all other options except for
                -f and -n are ignored.  The argument should be in the form
                ``[[[CC]YY]MMDD]hhmm[.SS]'' where each pair of letters repre-
                sents the following:

                      CC      The first two digits of the year (the century).
                      YY      The second two digits of the year.  If ``YY'' is
                              specified, but ``CC'' is not, a value for ``YY''
                              between 69 and 99 results in a ``CC'' value of
                              19.  Otherwise, a ``CC'' value of 20 is used.
                      MM      Month of the year, from 1 to 12.
                      DD      Day of the month, from 1 to 31.
                      hh      Hour of the day, from 0 to 23.
                      mm      Minute of the hour, from 0 to 59.
                      SS      Second of the minute, from 0 to 61.

                If the ``CC'' and ``YY'' letter pairs are not specified, the
                values default to the current year.  If the ``SS'' letter pair
                is not specified, the value defaults to 0.

     If multiple arguments are given, and a snapshot time is not specified,
     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.

FILES
     /var/adm/wtmpx
     /var/adm/last

SEE ALSO
     utmpx(5)

HISTORY
     The last command appeared in 3.0BSD.

Interix                         August 6, 2006                         Interix