# 2.11BSD#431 - /usr/man/cat1/who.0

    WHO(1)		    UNIX Programmer's Manual		   WHO(1)

    NAME
         who - who is on the system

    SYNOPSIS
         who [ who-file ] [ am I ]

    DESCRIPTION
         Who, without an argument, lists the login name, terminal
         name, and login time for each current UNIX user.

         Without an argument, who examines the /var/run/utmp file to
         obtain its information.  If a file is given, that file is
         examined.	Typically the given file will be /usr/adm/wtmp,
         which contains a record of all the logins since it was
         created.  Then who lists logins, logouts, and crashes since
         the creation of the wtmp file.  Each login is listed with
         user name, terminal name (with `/dev/' suppressed), and date
         and time.	When an argument is given, logouts produce a
         similar line without a user name.	Reboots produce a line
         with `x' in the place of the device name, and a fossil time
         indicative of when the system went down.

         With two arguments, as in `who am I' (and also `who are
         you'), who tells who you are logged in as.

    FILES
         /var/run/utmp

    SEE ALSO
         getuid(2), utmp(5)

    Printed 11/26/99	November 27, 1996			1

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