Checking for logged on users

[Alex Monaghan <monaghaa@royalmail.co.uk>]

I'm experimenting with a timer on my home mail server.

I've got a simple script to dialup and send / receive mail & news.

The timer switches the system & modem on and waits then switches off. The system 
runs a closedown script via cron before the timer is due to switch off. When I'm 
running locally the timer will be on a manual override.

Any suggestions of how I can check in my closedown script to see if I've got any 
logged on users ? I use pop3, news, samba and ip masquerading from other machines 
and can safely assume that the timer will be on override when any of these services 
are active.

Thanks

-- 
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    Alex Monaghan   Network Support Analyst, Royal Mail Anglia
                    London Rd, Stevenage, SG1 1AA, UK
    Email           monaghaa@royalmail.co.uk 
    STD             01438 767081
    Postline        5811 7081
----------------------------------------------------------------------


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