irix - last (1)

     last - indicate last logins of users and terminals

     last [ -# ] [ -a ]	[ -x ] [ -f file [ -W ]	[ name ...  ] [	tty ...	 ]

     Last will look in the wtmp	file which records all logins and logouts for
     information about a user, a terminal or any group of users	and terminals.
     Arguments specify names of	users or terminals of interest.	 Names of
     terminals may be given fully or abbreviated.  For example `last d1' is
     the same as `last ttyd1'.	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 terminal.

     Last will print the sessions of the specified users and terminals,	most
     recent first, indicating the times	at which the session began, the
     duration of the session, and the terminal which the session took place
     on.  Last indicates if the	session	is still continuing or was cut short
     by	a reboot.  If wtmpx exists, last will also print the session's
     $DISPLAY (see xdm(1)), which generally identifies the remote host
     originating telnet, FTP, or rlogin	sessions.  In some cases this ``from''
     field will	be blank.

     The pseudo-user reboot logs in at reboots of the system, thus ``last
     reboot'' will give	an indication of mean time between system restarts.

     Last with no arguments prints a record of all logins and logouts, in
     reverse order.  The -# option limits the report to	# lines, where # is a
     number.

     Last ordinarily does not display uninteresting records associated with
     starting and stopping a login.  The -a option displays those records.

     The -f option can be used to examine another file,	such as
     /var/adm/OLDwtmp, in which	old records are	kept.  If the file is in
     extended format (eg. /var/adm/OLDwtmpx), the -x option must be used also.

     -W	displays the ``from'' field on a separate line,	untruncated.  (The
     utmpx ut_host field accommodates a	256-character string, but most
     commands truncate before displaying it.)

     If	last is	interrupted, it	indicates how far the search has progressed in
     wtmp. If interrupted with a quit signal (generated	by a control-\), last
     indicates how far the search has progressed so far, and the search
     continues.

     Unlike in past releases, the wtmp and wtmpx files are automatically
     created during software installation.

     The wtmp and wtmpx	files are rotated on a regular basis by	cron(1M) to
     prevent them from filling the disk.

     /var/adm/wtmp	 login data base
     /var/adm/wtmpx	 extended login	data base
     /var/adm/OLDwtmp	 previous wtmp file
     /var/adm/OLDwtmpx	 previous wtmpx	file

     xdm(1), w(1), who(1), utmp(4), utmpx(4), wtmp(4), wtmpx(4)