Simple CPU temperature monitor, also displays core speeds if available. Requires manual setting of temperature sources

tempmon.sh

#tempmon modified
function tempmon() {
	
#    datadir="$HOME/tempinfo";
	datadir="/tmp/tempinfo";
#    rm -rf $datadir;
	mkdir -p $datadir;

	sleeptime=10; #seconds

	#loop
	while true;
	do
	#core freq
	#if cpuinfo
	if [ "`cat /proc/cpuinfo | grep "cpu MHz"`" ];
	then
		#echo "Clock Speed(s) MHz:";
		#for item in `cat /proc/cpuinfo | grep "cpu MHz" | sed s'/  //'g | sed s'/cpu MHz//'g | sed s'/://'g`;
		#do echo $item;
		#done;
		cpufreqs=(`cat /proc/cpuinfo | grep "cpu MHz" | sed s'/  //'g | sed s'/cpu MHz//'g | sed s'/://'g`);
	fi;	
	
	#temp
		coreno=0;
		#temp sources
		tempsrc="/sys/class/hwmon/hwmon0"; #desktop
		tempnamereg="temp*_input";
		
		#tempsrc="/sys/class/thermal/thermal_zone0/"; #pi
		#tempnamereg="temp";
		
		#read sensor paths and pass to monitor
		for temp in `ls $tempsrc/$tempnamereg | sort`;
		do
			#get sensors
			#sensor="${temp%_*}";
			#echo $temp;
			#tempfilename=`basename $temp`;
			#echo $tempfilename;		
		
			avgtemp=0;
			hightemp=0;
			lowtemp=0;
			newtemp=`cat $temp`;
			#let newtemp/=1000;

			path_avgtemp="$datadir/`basename $temp`_avg"
			path_hightemp="$datadir/`basename $temp`_high"
			path_lowtemp="$datadir/`basename $temp`_low"

			if [ -f "$path_hightemp" ];
			then hightemp=`cat $path_hightemp`;
			fi;

			#check if highest
			if [ $newtemp -gt $hightemp ];
			then
				let hightemp=$newtemp;
				echo $hightemp > $path_hightemp;
			fi;

			if [ -f "$path_lowtemp" ];
			then lowtemp=`cat $path_lowtemp`;
			fi;

			#check if lowest
			if [ $newtemp -lt $lowtemp ] || [ $lowtemp == 0 ];
			then
				let lowtemp=$newtemp;
				echo $lowtemp > $path_lowtemp;
			fi;

			if [ -f "$path_avgtemp" ];
			then avgtemp=`cat $path_avgtemp`;
			else let avgtemp=$newtemp;
			fi;

			#get average
			let avgtemp=$avgtemp+$newtemp;
			let avgtemp/=2;
	        if [ $avgtemp != $newtemp ] || [ ! -f "$path_avgtemp" ];
			then
				echo $avgtemp > $path_avgtemp;
	        fi;
	
			#display
			echo "Core:$coreno[${cpufreqs[$coreno]}MHz]-> Current:$newtemp / Avg:$avgtemp / High:$hightemp / Low:$lowtemp";
			let coreno+=1;
		done;
		sleep $sleeptime;
		clear;
	done;
}
tempmon;