Linux ATI fan control

#!/bin/bash

while true; do
    tmp="`aticonfig --adapter=0 --od-gettemperature |
          grep Temperature | awk '{print $5}'`"

    temp=$( printf "%0.f\n" $tmp )

    if [ $temp -lt 45 ]; then
        echo "temp=$temp fanspeed=0"
        aticonfig --pplib-cmd "set fanspeed 0 0"
    elif [ $temp -lt 55 ]; then
        echo "temp=$temp fanspeed=40"
        aticonfig --pplib-cmd "set fanspeed 0 40"
    else
        echo "temp=$temp fanspeed=100"
        aticonfig --pplib-cmd "set fanspeed 0 100"
    fi
    sleep 5
done