Raspberry Pi - Ubuntu - Get the CPU temperature and core frequency

cpustat.sh

#!/bin/bash

temp=$(</sys/class/thermal/thermal_zone0/temp)
freq_hz=$(</sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq)


temp_f=`echo "$temp/1000" | bc -l`
freq_ghz_f=`echo "$freq_hz/1000000" | bc -l`

printf "CPU Temp: %.2f°C\n"  $temp_f
printf "CPU Freq: %.2fGHz\n" $freq_ghz_f

Don't forget to make this executable:

chmod +x /path/to/script/tempc.sh

If you want to poll, use watch:

watch -n 1 "/path/to/script/tempc.sh"