# low overhead 
echo "##" Time = $(date +%s) "cpu usage"
cat /proc/stat 
echo "##" Time = $(date +%s) "cpu online status" 
cat /sys/devices/system/cpu/online
echo "##" Time = $(date +%s) "cpu 0 freq" 
cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state 
echo "##" Time = $(date +%s) "cpu 1 freq" 
cat /sys/devices/system/cpu/cpu1/cpufreq/stats/time_in_state
echo "##" Time = $(date +%s) "soc temperature"
cat /sys/devices/virtual/thermal/thermal_zone0/temp
echo "##" Time = $(date +%s) "battery"
cat /sys/class/power_supply/battery/capacity
cat /sys/class/power_supply/battery/voltage_now
cat /sys/class/power_supply/battery/status