CPU温度 $ /opt/vc/bin/vcgencmd measure_temp $ cat /sys/class/thermal/thermal_zone0/temp CPU情報 $ cat /proc/cpuinfo CPUクロック $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq $ /opt/vc/bin/vcgencmd measure_clock arm メモリー情報 $ cat /proc/meminfo 電圧 /opt/vc/bin/vcgencmd measure_volts core vcgencmd使い方 RPI vcgencmd usage