04-07-2008
Keyboard Input
Does anyone know how do you determine the user idle time of STDIN in order to log the user out for being idle too long. I would like to write a c program to do this but I it is not clear upon how to determine idle time from keyboard input. I have found that the "who.c" source file uses the last access time of the tty. Is there no other way than access and mod times to see if the user is writing to STDIN and at what time?
Thanks in advance.
Chris
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rusers(1) General Commands Manual rusers(1)
NAME
rusers - Display a list of users who are logged in to a remote machine
SYNOPSIS
rusers [-ahilu] host...
OPTIONS
Give a report for a machine even if no users are logged in. Sort alphabetically by host name. Sort by idle time. Give a longer listing
in the style of who(1). Sort by number of users.
DESCRIPTION
The rusers command displays information about users and processes running on remote machines. The listing is in the order in which
responses are received, but this order can be changed by specifying one of the options listed in the OPTIONS section.
By default the rusers command prints the names of the users logged in. When the -l option is given, additional information is printed for
each user, as follows:
userid hostname:terminal login date login time idle time login host
If hostname and login host are the same value, the login host field is not displayed. Likewise, if hostname is not idle, the idle time
is not displayed. A remote host only responds if it is running the rusersd daemon, which may be started from the inetd daemon or the listen
function.
SEE ALSO
Commands: who(1), inetd(8)
Functions: listen(2)
rusers(1)