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last(1) [opensolaris man page]

last(1) 							   User Commands							   last(1)

NAME
last - display login and logout information about users and terminals SYNOPSIS
last [-a] [-n number | -number] [-f filename] [name | tty]... DESCRIPTION
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 displays 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 time. 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. OPTIONS
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 /var/adm/wtmpx. -n number|-number Limits the number of entries displayed to that specified by number. These options are identical; the -number option is provided as a transition tool only and is removed in future releases. ENVIRONMENT VARIABLES
Date and time format is based on locale specified by the LC_ALL, LC_TIME, or LANG environments, in that order of priority. FILES
/var/adm/wtmpx accounting file ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
utmpx(4), attributes(5) SunOS 5.11 24 Jul 2004 last(1)

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LAST(1) 						    BSD General Commands Manual 						   LAST(1)

NAME
last -- indicate last logins of users and ttys SYNOPSIS
last [-swy] [-d [[CC]YY][MMDD]hhmm[.SS]] [-f file] [-h host] [-n maxrec] [-t tty] [user ...] DESCRIPTION
The last utility will either list the sessions of specified users, ttys, and hosts, in reverse time order, or list the users logged in at a specified date and time. 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 indicate. The following options are available: -d date Specify the snapshot date and time. All users logged in at the snapshot date and time will be reported. This may be used with the -f option to derive the results from stored utx.log 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 represents the follow- ing: 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. -f file Read the file file instead of the default, /var/log/utx.log. -h host Host names may be names or internet numbers. -n maxrec Limit the report to maxrec lines. -s Report the duration of the login session in seconds, instead of the default days, hours and minutes. -t tty Specify the tty. Tty names may be given fully or abbreviated, for example, ``last -t 03'' is equivalent to ``last -t tty03''. -w Widen the duration field to show seconds, as well as the default days, hours and minutes. -y Report the year in the session start time. 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 progressed. If interrupted with a quit signal last indicates how far the search has progressed and then continues. FILES
/var/log/utx.log login data base SEE ALSO
lastcomm(1), getutxent(3), ac(8), lastlogin(8) HISTORY
A last utility appeared in 3.0BSD. BUGS
If a login shell should terminate abnormally for some reason, it is likely that a logout record will not be written to the utx.log file. In this case, last will indicate the logout time as "shutdown". BSD
January 21, 2010 BSD
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