CPU core temperature monitoring utility

hottestcore.sh

#!/bin/sh
# cpu core temp monitor tool for my i7 4930k

SENSOR="coretemp-isa-0000"

COLUMNS=`tput cols`
if [ "$COLUMNS" -lt 106 ]; then
	echo "Terminal needs to be 106 columns wide for hottestcore to work correctly."
	exit 1
fi

HOTTEST=0
STARTTIME=`date +%s`

function coretemp() 
{
	CORE=$1

	if [ -z "$CORE" ]; then
		echo "USAGE: coretemp CORENUMBER [ 1 - 6 ]"
		exit 1
	fi

	if [ $CORE -ge 1 ] && [ $CORE -le 6 ]; then
		sensors $SENSOR | sed '1d;2d;/^$/d' | grep -v Physical | awk '{ if (NR=='"$CORE"') {print$3} }' | cut -d . -f1 | sed 's/+//g'
	else
		echo "Invalid core specified!"
        fi
}


function listcores() 
{
	coretemp 1
	coretemp 2
	coretemp 3
	coretemp 4
	coretemp 5
	coretemp 6
}

function surfacetemp() 
{
	sensors | grep "CPU Temp" | cut -d':' -f2 | sed 's/^ *+//g' | cut -d ' ' -f1
}

function CPUfanspeed() 
{
	sensors | grep "CPU Intake" | grep RPM | cut -d ':' -f2- | sed 's/^[ \t]*//g'
}

function avgtemp()
{
	echo "scale=1; ($(coretemp 1)+$(coretemp 2)+$(coretemp 3)+$(coretemp 4)+$(coretemp 5)+$(coretemp 6))/6" | bc
}

function cpu_vcore()
{
	echo "`sensors | grep Vcore | cut -d ':' -f2- | sed 's/^ *+//' | cut -d ' ' -f1 | sed 's/ $//'`v"
}

while [ 1 == 1 ]; do
	RUNNING=`date +%s`
	HOTTEST2=`listcores | sort -rk1 | head -n 1`
	if [ $HOTTEST2 -gt $HOTTEST ]; then
		HOTTEST=$HOTTEST2	
		printf "(HIGHEST) CORE TEMP: $HOTTEST C\r"
	fi
	let s=$RUNNING-$STARTTIME
	
	TIMER=`printf "%02d:%02d:%02d" $((s/3600)) $((s%3600/60)) $((s%60))`
	
	printf "CPU SURFACE: \e[1;32m`surfacetemp`\e[0m VCORE: \e[1;32m`cpu_vcore`\e[0m \e[1;32m\e[0mCPU FAN: \e[1;34m`CPUfanspeed`\e[0m HIGHEST CORETEMP: \e[1;31m"$HOTTEST2"°C\e[0m MAX: \e[1;31m"$HOTTEST"°C \e[0mAVG: \e[1;31m`avgtemp`°C\e[0m $TIMER  \r"
	sleep 1
done