[CentOS] suggestion of service

I think that in hw_rng machines something like this is good (not
via-rng):



> #!/bin/bash 
> # 
> # chkconfig: 2345 20 80 
> # description: Rngd daemon\ 
> # processname: rngd 
> # pidfile: /var/run/rngd.pid 
> # config: /etc/sysconfig/rngd 
> 
> # source function library 
> . /etc/init.d/functions
> 
> RETVAL=0
> 
> start() {
>         echo -n $"Starting rngd services: "
>         modprobe via-rng 
>         /sbin/rngd -b -o /dev/random -r /dev/hwrng
> }
> 
> stop() {
>         echo -n $"Kill rngd services: "
>         killproc rngd
> }
> 
> case "$1" in
>   start)
>         start
>         ;;
>   stop)
>         stop
>         ;;
>   restart|reload)
>         stop
>         start
>         ;;
>   condrestart)
>         if [ -f /var/lock/subsys/rngd ]; then
>             stop
>             start
>         fi
>         ;;
>   status)
>         status rngd
>         RETVAL=$?
>         ;;
>   *)
>         echo $"Usage: $0 {start|stop|restart|condrestart|status}"
>         exit 1
> esac
> 
> exit $RETVAL
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