pistats-fa.sh

#!/bin/bash

# Set the path to your webroot here
WEBROOT='/usr/share/dump1090-fa/html'

# Get current CPU frequency
STAT1=$(sudo cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)

# vcgencmd commands
# Return current cpu temperature
STAT2=$(sudo vcgencmd measure_temp)
STAT2=${STAT2:5:-2}

# Return current voltage
STAT3=$(sudo vcgencmd measure_volts)
STAT3=${STAT3:5:-1}

# Return throttle state
STAT4=$(sudo vcgencmd get_throttled)
STAT4=${STAT4:10}

# Which Pi model do we have?
STAT5=$(sudo cat /sys/firmware/devicetree/base/model | tr '\0' '\n')

JSON_STRING=$( sudo jq -n \
                --arg fr "$STAT1" \
                --arg te "$STAT2" \
                --arg vo "$STAT3" \
                --arg th "$STAT4" \
                --arg mo "$STAT5" \
                '{freq: $fr, temp: $te, volt: $vo, throttle: $th, model: $mo}')

echo $JSON_STRING > pistats.json
sudo mv pistats.json $WEBROOT