NVIDIA GPU Fan Control

#!/bin/bash

date=$(date '+%Y/%m/%d %H:%M:%S');

gpufancontrolstate=`nvidia-settings --display :0 --query GPUFanControlState --terse`
echo "${date}   GPU Fan Control State = "${gpufancontrolstate}

if [ "${gpufancontrolstate}" != "1" ]
    then
        echo "${date}   Setting GPU Fan Control State = 1"
        nvidia-settings --display :0 -a "GPUFanControlState=1"
fi

gputemp=`nvidia-settings --display :0 --query [gpu:0]/GPUCoreTemp --terse`
echo "${date}   GPU Core Temperature = "${gputemp}"*C"

case "${gputemp}" in
        3[0-9])
                newfanspeed="50"
                ;;
        4[0-9])
                newfanspeed="60"
                ;;
        5[0-9])
                newfanspeed="70"
                ;;
        6[0-9])
                newfanspeed="80"
                ;;
        7[0-9])
                newfanspeed="90"
                ;;
        *)
                newfanspeed="100"
                ;;
esac

gputargetfanspeed=`nvidia-settings --display :0 --query GPUTargetFanSpeed --terse`
echo "${date}   GPU Target Fan Speed = "${gputargetfanspeed}"%"

if [ "$newfanspeed" != "$gputargetfanspeed" ]
    then
        echo "${date}   Setting GPU Target Fan Speed = "${newfanspeed}"%"

        output=`nvidia-settings --display :0 -a "[fan:0]/GPUTargetFanSpeed=${newfanspeed}"`
        echo "${date}   ${output}"
else
    echo "${date}   No GPU Target Fan Speed update required."
fi