fan speed for dell t320

#!/bin/bash
set -x #for debugging
#Stops script on errors, unset variables or failing pipeline
set -euo pipefail

# ensure manual controls are available
ipmitool -I open raw 0x30 0x30 0x01 0x00

#variables definitions
LOG=/var/log/ipmi.log

#functions
##Set Fan Speed, accept one argument to set speed
FanSpeed()
{
        ipmitool -I open raw 0x30 0x30 0x02 $1
}


##Get Temp values
GetValues()
{
        #Get motherboard, cpu1 and cpu2 temperature
        OUTPUT=$(/usr/bin/ipmitool -I open sdr type temperature |egrep '0Eh|04h' | awk -F'|' '{ print $5 $9 $13 }' | awk '{ print $1 }'|tr '\n' "+" |sed s/+$//g)
        #motherboard+cpu1+cpu2 temp
        LOG_TOTAL=$(($OUTPUT))
        #Get Fan1 speed
        FANS=$(ipmitool -I open sensor reading "Sys Fan1" | awk '{ print $3 }')
}

GetValues
echo "$(date "+%Y-%m-%d %H:%M:%S")" "LOG_TOTAL : $LOG_TOTAL"

while :
do
        if [ "$LOG_TOTAL" -le 60 ] && [ $FANS -le 2520 ]; then
                echo "$(date "+%Y-%m-%d %H:%M:%S")" "FAN speed : 2520, <= 2520 don't do anything" | tee -a "$LOG"
        elif [ "$LOG_TOTAL" -le 60 ] && [ $FANS -ne 2520 ]; then
                FanSpeed "0xff 0x05" #Set speed to 2520
                echo "$(date "+%Y-%m-%d %H:%M:%S")" "Set speed to 2520" | tee -a "$LOG"
        elif [ "$LOG_TOTAL" -gt 60 ] && [ "$LOG_TOTAL" -le 65 ] && [ $FANS -ne 2880 ]; then
                FanSpeed "0xff 0x07" #Set speed to 2880
                echo "$(date "+%Y-%m-%d %H:%M:%S")" "Set speed to 2880" | tee -a "$LOG"
        elif [ "$LOG_TOTAL" -gt 65 ] && [ "$LOG_TOTAL" -le 75 ] && [ $FANS -ne 2040 ]; then
                FanSpeed "0xff 0x0A" #Set speed to 3240
                echo "$(date "+%Y-%m-%d %H:%M:%S")" "Set speed to 3240" | tee -a "$LOG"
        elif [ "$LOG_TOTAL" -gt 75 ] && [ "$LOG_TOTAL" -le 85 ] && [ $FANS -ne 7320 ]; then
                FanSpeed "0xff 0x23" #Set speed to 7320
                echo "$(date "+%Y-%m-%d %H:%M:%S")" "Set speed to 7320" | tee -a "$LOG"
        elif [ "$LOG_TOTAL" -gt 90 ] && [ $FANS -ne 10200 ]; then
                FanSpeed "0xff 0x32" #Set speed to 10200
                echo "$(date "+%Y-%m-%d %H:%M:%S")" "Set speed to 10200" | tee -a "$LOG"
        fi
        sleep 30s
        GetValues
        echo "$(date "+%Y-%m-%d %H:%M:%S")" "$LOG_TOTAL" >> "$LOG"
        echo "$(date "+%Y-%m-%d %H:%M:%S")" "FAN speed : $FANS" | tee -a "$LOG"
done