04-15-2009
Get the list of logged in users
How can I get the list of logged in users in the system programmatically?
I can get the list with 'who' or 'users' commands but I need to get the list programmatically...
May someone help, please?
Thanks in advance.
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RWHO(1) BSD General Commands Manual RWHO(1)
NAME
rwho -- who is logged in on local machines
SYNOPSIS
rwho [-aHq]
DESCRIPTION
The rwho command produces output similar to who(1), but for all machines on the local network. If no report has been received from a machine
for 11 minutes then rwho assumes the machine is down, and does not report the users last known to be logged into that machine.
If a user hasn't typed to the system for a minute or more, then rwho reports this idle time.
-a Include all users. By default, if a user hasn't typed to the system for an hour or more, then the user will be omitted from the
output.
-H Write column headings above the regular output.
-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.
FILES
/var/rwho/whod.* information about other machines
SEE ALSO
finger(1), rup(1), ruptime(1), rusers(1), who(1), rwhod(8)
HISTORY
The rwho command appeared in 4.3BSD.
BUGS
This is unwieldy when the number of machines on the local net is large.
BSD
September 30, 2005 BSD