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OpenSolaris 2009.06 - man page for last (opensolaris section 1)

last(1) 				  User Commands 				  last(1)

       last - display login and logout information about users and terminals

       last [-a] [-n number | -number] [-f filename]
	    [name | tty]...

       The  last  command looks in the /var/adm/wtmpx 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. If multiple arguments are given, the
       information applicable to any of the arguments is printed. For example, last root  console
       lists  all  of root's sessions, as well as all sessions on the console terminal. last dis-
       plays 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 on which
       the session took place. last also indicates whether the session is continuing or  was  cut
       short by a reboot.

       The pseudo-user reboot logs in when the system is shutdown and when it reboots. Thus,

	 last reboot

       gives an approximate record of when the operating system instance was shutdown and when it
       rebooted. This can be used to calculate the availability  of  the  operating  system  over

       last with no arguments displays a record of all logins and logouts, in reverse order.

       If  last is interrupted, it indicates how far the search has progressed in /var/adm/wtmpx.
       If interrupted with a quit signal (generated by a CTRL-\),  last  indicates  how  far  the
       search has progressed, and then continues the search.

       The following options are supported:

       -a			Displays the hostname in the last column.

       -f filename		Uses  filename	as  the  name  of  the accounting file instead of

       -n number|-number	Limits the number of entries displayed to that specified by  num-
				ber.  These options are identical; the -number option is provided
				as a transition tool only and is removed in future releases.

       Date and time format is based on locale specified by the LC_ALL, LC_TIME, or LANG environ-
       ments, in that order of priority.

       /var/adm/wtmpx	 accounting file

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWesu			   |

       utmpx(4), attributes(5)

SunOS 5.11				   24 Jul 2004					  last(1)

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