WHO(1) General Commands Manual WHO(1)
NAME
who - print list of currently logged in users
SYNOPSIS
who [file]
EXAMPLES
who # Print user names, terminals and times
DESCRIPTION
Who prints a list of currently logged in users. For each one, the user name, terminal, and login time is printed. This program gets its
information from the file /etc/utmp, which is updated by init and login. If the file does not exist, neither of these will create it, and
who will not work. Note that if you decide to create an empty /usr/adm/wtmp to enable the login accounting, it will grow forever and even-
tually fill up your disk unless you manually truncate it from time to time. If an optional file name is provided, the logins in that file
will be printed.
SEE ALSO
utmp(5).
WHO(1)
