#!/bin/bash
s='Physical id 0: +67.0°C (high = +84.0°C, crit = +100.0°C)'
echo $s | grep '^Physical id 0: ' | awk '{print $4}'
IyEvYmluL2Jhc2gKcz0nUGh5c2ljYWwgaWQgMDogICs2Ny4wwrBDICAoaGlnaCA9ICs4NC4wwrBDLCBjcml0ID0gKzEwMC4wwrBDKScKZWNobyAkcyB8IGdyZXAgJ15QaHlzaWNhbCBpZCAwOiAnIHwgYXdrICd7cHJpbnQgJDR9Jw==