rpi-stats.sh

#!/bin/bash

PATH=$PATH:/opt/vc/bin
export PATH

GET_CPU_FREQ() {
    let CPU_FREQ=$1/1000
    echo "$CPU_FREQ"
}

GET_CPU_OVERVOLTAGE() {
    let CPU_OVERVOLTAGE=${1#*.}-20
    if [[ $CPU_OVERVOLTAGE = *[^0-9]* ]]; then
        echo "$CPU_OVERVOLTAGE"
    else
        echo "+$CPU_OVERVOLTAGE"
    fi
}

DISPLAY_TEMP(){
    CPU_TEMP=$(vcgencmd measure_temp)
    CPU_TEMP=${CPU_TEMP:5:4}
    echo "CPU Temperature:        $CPU_TEMP C"
}

DISPLAY_VOLTAGE(){
    CPU_VOLTAGE=$(vcgencmd measure_volts)
    CPU_VOLTAGE=${CPU_VOLTAGE:5:4}
    echo "CPU Voltage:            $CPU_VOLTAGE V"
    if [ $CPU_VOLTAGE != "1.20" ]; then
        CPU_OVERVOLTAGE=$(GET_CPU_OVERVOLTAGE $CPU_VOLTAGE)
        if [ CPU_OVERVOLTAGE > "1.20" ]; then
            echo -e "CPU Overvoltage:        \033[0;31m$CPU_OVERVOLTAGE\033[0m"
        else
            echo -e "CPU Undervoltage:       \032[0;31m$CPU_OVERVOLTAGE\033[0m"
        fi
    fi
}

DISPLAY_MIN_FREQ(){
    CPU_FREQ_MIN=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq)
    CPU_FREQ_MIN=$(GET_CPU_FREQ $CPU_FREQ_MIN)
    echo "Min CPU Frequency:      $CPU_FREQ_MIN MHz"
}

DISPLAY_MAX_FREQ(){
    CPU_FREQ_MAX=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq)
    CPU_FREQ_MAX=$(GET_CPU_FREQ $CPU_FREQ_MAX)
    echo "Max CPU Frequency:      $CPU_FREQ_MAX MHz"
}

DISPLAY_CURRENT_FREQ(){
    CPU_FREQ_CURRENT=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)
    CPU_FREQ_CURRENT=$(GET_CPU_FREQ $CPU_FREQ_CURRENT)
    echo "Current CPU Frequency:  $CPU_FREQ_CURRENT MHz"
}

DISPLAY_GOVERNOR(){
    CPU_GOVERNOR=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)
    echo "CPU Governor:           $CPU_GOVERNOR"
}

DISPLAY_TEMP
DISPLAY_VOLTAGE
DISPLAY_MIN_FREQ
DISPLAY_MAX_FREQ
DISPLAY_CURRENT_FREQ
DISPLAY_GOVERNOR

exit 0