#!/bin/bash

#interfaces:
#ifconfig -a | sed 's/[ \t].*//;/^$/d' | grep -v "lo" | tr -d ":"

#ip for interface:
#ip address show dev vcn scope global | awk '/inet / {split($2,var,"/"); print var[1]}'

spacer="   "


while true; do

freq_raw=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)
temp=$(vcgencmd measure_temp)
volt=$(vcgencmd measure_volts)

freq=$(( $freq_raw / 1000 ))

echo "System stats:"
echo "   "$(uptime)
echo " ---"
echo "Raspi stats:"
echo "   freq="$freq"mhz"
echo "   "$temp
echo "   "$volt
echo " ---"
echo "Net stats:"
for interface in $(ifconfig -a | sed 's/[ \t].*//;/^$/d' | grep -v "lo" | tr -d ":")
do
        echo "   "$interface": "$(ip address show dev $interface scope global | awk '/inet / {split($2,var,"/"); print var[1]}')
done
echo " ---"

sleep 5
clear

#    # \r  is a "carriage return" - returns cursor to start of line
#    printf "\r%3d Days, %02d:%02d:%02d" $DAYS $HOURS $MINS $SECS

# In the following line -t for timeout, -N for just 1 character
    read -t 0.25 -N 1 input
    if [[ $input = "q" ]] || [[ $input = "Q" ]]; then
# The following line is for the prompt to appear on a new line.
        echo
        break 
    fi
done