WHO(I) 3/15/72 WHO(I)
NAME
who - who is on the system
SYNOPSIS
who [ who-file ]
DESCRIPTION
Who, without an argument, lists the name, typewriter
channel, and login time for each current UNIX user.
Without an argument, who examines the /tmp/utmp file to
obtain its information. If a file is given, that file is
examined. Typically the given file will be /tmp/wtmp, which
contains a record of all the logins since it was created.
Then who will list logins, logouts, and crashes since the
creation of the wtmp file.
Each login is listed with user name, typewriter 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.
FILES
/tmp/utmp
SEE ALSO
login (I), init (VII)
BUGS