How to lock own console when idle?


 
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Top Forums Programming How to lock own console when idle?
# 15  
Old 11-11-2008
Ah, okay, I was smoking something in my teens. Or maybe thinking of Kernel programming?? Anyway, in Linux, the man pages specifically states:
Code:
 sleep() may be implemented using SIGALRM; mixing calls to alarm() and sleep() is a bad idea.

So develop_5889, don't use the alarm()/sigtrap routines -- just use sleep(). And actually, it makes more sense to call sleep() with the configured idle-time minus the amount of time that the TTY has been idle.
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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)