Logging system status

log_status.sh

#!/usr/bin/env bash

log_path=${HOME}/status_history.log
title="date,cpu_temp(celsius),cpu_load_1min(%),cpu_load_5min(%),cpu_load_15min(%),mem_free(MB),mem_total(MB)"

if [[ ! -f "${log_path}" ]]; then
  echo -e ${title} > ${log_path}
  echo -e ${title}
fi

tput setaf 3
echo "Press CTRL+C to stop..."
tput sgr0

for (( ; ; ))
do
  date=$(date +"%Y-%m-%d %H:%M:%S")
  cpu_load_1min=$(cat /proc/loadavg | awk '{printf "%.2f", $(NF-4)}')
  cpu_load_5min=$(cat /proc/loadavg | awk '{printf "%.2f", $(NF-3)}')
  cpu_load_15min=$(cat /proc/loadavg | awk '{printf "%.2f", $(NF-2)}')
  cpu_temp=$(cat /sys/devices/virtual/thermal/thermal_zone0/temp | awk '{printf "%d\n", $1/1000}')
  mem_usage=$(free -m | awk 'NR==2{printf "%s,%s", $3,$2 }')
  log_str="${date},${cpu_temp},${cpu_load_1min},${cpu_load_5min},${cpu_load_15min},${mem_usage}"
  echo -e ${log_str} >> ${log_path}
  echo -e ${log_str}
  sleep 1
done