[plug] loading programs on startup

[Craig Ringer]

> I've jsut made a program the continually checks the com port status,
> then shuts down the computer when a button is pressed.
> I was wondering is it possibly to load it when the computer boots, and
> do i have to change the code at all to make this happen (attached).

Red Hat and most other RPM based distros: add it to /etc/rc.d/rc.sysinit 
and it'll get run at boot. Make sure it backgrounds itself or call it as 
"programname &", since otherwise it'll hang your boot process.

Alternately, use System V init - basically copy the way your existing 
/etc/init.d and /etc/rc*.d stuff works - or the @reboot cron method 
Bernard suggested.

IMHO, rc.sysinit is the easy way for those distros that use it, 
otherwise I'd use an init script.

Craig Ringer

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