🌡️LINUX, it shows your temperature and the CPU speed (I use Debian and Ubuntu).

linux-cpu-temperature-speed.sh

#!/bin/bash
# Debian
# sudo apt install lm-sensors bc linux-cpupower

# Ubuntu
# probably is https://packages.ubuntu.com/search?suite=xenial&section=all&arch=any&keywords=cpupower&searchon=contents
# but you might to have a specific kernel linux-tools-common
# sudo apt install lm-sensors bc linux-tools-common

# Then you go this:
# sudo sensors-detect
# It will ask you few questions. Answer default (just ENTER) for all of them. Finally to get your CPU temperature type sensors in your terminal

# Enable some services
# sudo systemctl enable kmod.
# sudo service kmod start

if [[ $EUID -ne 0 ]]; then
    printf "You are not root!\n\n"
    exit 1
fi

sensors

function show_temp {
    echo $1 $(($2/1000))°C
}

function tempfunction {

#    THERMAL=/sys/class/thermal
#    for entry in `ls $THERMAL`; do
#        class=$THERMAL/$entry/temp
#        if [ -f $class ]; then
#            temp=$(< $class)
#            show_temp $class $temp
#        fi
#    done

#   for entry in `find /sys/devices/virtual/thermal -iname '*temp*'  ! -iname "*emul*" `; do
#        temp=$(< $entry )
#        show_temp $entry $temp
#    done

    sensors
    cpupower frequency-info | grep -i "mhz\|ghz"
    echo
    scaling_cur_freq=`cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq`
    cpu_core=1
    for freq in $scaling_cur_freq; do
            freq_in_ghz=$(echo "scale=2; $freq/1000" | bc)
            echo "CPU/Thread $cpu_core:     $freq_in_ghz Mhz"
            let cpu_core=${cpu_core}+1
    done
    # watch -n1 cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
    #cat /proc/cpuinfo | grep 'MHz'
}
export -f tempfunction
export -f show_temp

watch -n 1 --exec bash -c "tempfunction"

Linux Mint - Ubuntu (i7 3770k, 32GB RAM DDR3 at 2133Mhz) - my workstation:

Debian Tesing/Buster (i7 7700k, 32 GB RAM DDR4 at 2133 Mhz) - my server: