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who(1) [netbsd man page]

WHO(1)							    BSD General Commands Manual 						    WHO(1)

who -- display who is logged in SYNOPSIS
who [-abdHlmqrstTuv] [file] who am i DESCRIPTION
The who utility displays a list of all users currently logged on, showing for each user the login name, tty name, the date and time of login, and hostname if not local. Available options: -a Same as --bdlprTtuv. -b Time of last system boot. -d Print dead processes. -H Write column headings above the regular output. -l Print system login processes. -m Only print information about the current terminal. This is the POSIX way of saying who am i. -p Print active processes spawned by init(8). -q ``Quick mode'': List only the names and the number of users currently logged on. When this option is used, all other options are ignored. -r Print the current runlevel. Supported runlevels are: d (DEATH) The system has halted. s (SINGLE_USER) The system is running in single user mode. r (RUNCOM) The system is executing /etc/rc. t (READ_TTYS) The system is processing /etc/ttys. m (MULTI_USER) The system is running in multi-user mode. T (CLEAN_TTYS) The system is in the process of stopping processes associated with terminal devices. c (CATATONIA) The system is in the process of shutting down and will not create new processes. -s List only the name, line and time fields. This is the default. -T Print a character after the user name indicating the state of the terminal line: '+' if the terminal is writable; '-' if it is not; and '?' if a bad line is encountered. -t Print last system clock change. -u Print the idle time for each user, and the associated process ID. -v When printing of more information is requested with -u, this switch can be used to also printed process termination signals, process exit status, session id for windowing and the type of the entry, see documentation of ut_type in getutxent(3). am I Returns the invoker's real user name. file By default, who gathers information from the file /var/run/utmpx. An alternative file may be specified which is usually /var/log/wtmpx (or /var/log/wtmp, or /var/log/wtmpx.[0-6] or /var/log/wtmp.[0-6] depending on site policy as wtmpx can grow quite large and daily ver- sions may or may not be kept around after compression by ac(8)). The wtmpx and wtmp file contains a record of every login, logout, crash, shutdown and date change since wtmpx and wtmp were last truncated or created. If /var/log/wtmpx or /var/log/wtmp are being used as the file, the user name may be empty or one of the special characters '|', '}' and '~'. Logouts produce an output line without any user name. For more information on the special characters, see utmp(5). FILES
/var/run/utmp /var/run/utmpx /var/log/wtmp /var/log/wtmp.[0-6] /var/log/wtmpx /var/log/wtmpx.[0-6] SEE ALSO
last(1), mesg(1), users(1), getuid(2), utmp(5), utmpx(5) STANDARDS
The who utility is expected to conform to IEEE Std 1003.2-1992 (``POSIX.2''). HISTORY
A who utility appeared in Version 6 AT&T UNIX. BSD
January 17, 2007 BSD

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

last -- indicate last logins of users and ttys SYNOPSIS
last [-n] [-nTx] [-f file] [-H hostsize] [-h host] [-L linesize] [-N namesize] [-t tty] [user ...] DESCRIPTION
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 ses- sion is still continuing or was cut short by a crash or shutdown, last will so indicate. The following options are available: -n Limits the report to n lines. -f file last reads the file file instead of the default, /var/log/wtmpx or /var/log/wtmp. If the file ends with 'x', it is treated as a utmpx(5) format file, else it is treated as a utmp(5) format file. If the file is ``-'', standard input is used. -H hostsize Use the provided hostsize as the width to format the host name field. -h host Host names may be names or internet numbers. -L linesize Use the provided linesize as the width to format the tty field. -N namesize Use the provided namesize as the width to format the login name field. -n Print host addresses numerically. This option works only on wtmpx(5) entries, and prints nothing on wtmp(5) entries. -T Display better time information, including the year and seconds. -t tty Specify the tty. Tty names may be given fully or abbreviated, for example, ``last -t 03'' is equivalent to ``last -t tty03''. -x Assume that the file given is in wtmpx(5) format, even if the filename does not end with an 'x'. Also useful when reading such format from standard input. If multiple arguments are given, 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/wtmp login data base /var/log/wtmpx login data base SEE ALSO
lastcomm(1), utmp(5), utmpx(5), ac(8), lastlogin(8) HISTORY
last appeared in 3.0BSD. BSD
October 18, 2011 BSD
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