树莓派cpu检测_获取树莓派当前状态和数据（温度、CPU、内存、硬盘）

本篇介绍如何使用Python编写一个能输出树莓派各种状态和数据的脚本，包括CPU温度、CPU占用情况、内存占用情况和硬盘占用。

建立脚本：

sudo nano get.py

贴入如下代码：

import os

# Return CPU temperature as a character string

def getCPUtemperature():

res = os.popen('vcgencmd measure_temp').readline()

return(res.replace("temp=","").replace("'C\n",""))

# Return RAM information (unit=kb) in a list

# Index 0: total RAM

# Index 1: used RAM

# Index 2: free RAM

def getRAMinfo():

p = os.popen('free')

i = 0

while 1:

i = i + 1

line = p.readline()

if i==2:

return(line.split()[1:4])

# Return % of CPU used by user as a character string

def getCPUuse():

return(str(os.popen("top -n1 | awk '/Cpu\(s\):/ {print $2}'").readline().strip()))

# Return information about disk space as a list (unit included)

# Index 0: total disk space

# Index 1: used disk space

# Index 2: remaining disk space

# Index 3: percentage of disk used

def getDiskSpace():

p = os.popen("df -h /")

i = 0

while 1:

i = i +1

line = p.readline()

if i==2:

return(line.split()[1:5])

# CPU informatiom

CPU_temp = getCPUtemperature()

CPU_usage = getCPUuse()

# RAM information

# Output is in kb, here I convert it in Mb for readability

RAM_stats = getRAMinfo()

RAM_total = round(int(RAM_stats[0]) / 1000,1)

RAM_used = round(int(RAM_stats[1]) / 1000,1)

RAM_free = round(int(RAM_stats[2]) / 1000,1)

# Disk information

DISK_stats = getDiskSpace()

DISK_total = DISK_stats[0]

DISK_used = DISK_stats[1]

DISK_perc = DISK_stats[3]

if __name__ == '__main__':

print('')

print('CPU Temperature = '+CPU_temp)

print('CPU Use = '+CPU_usage)

print('')

print('RAM Total = '+str(RAM_total)+' MB')

print('RAM Used = '+str(RAM_used)+' MB')

print('RAM Free = '+str(RAM_free)+' MB')

print('')

print('DISK Total Space = '+str(DISK_total)+'B')

print('DISK Used Space = '+str(DISK_used)+'B')

print('DISK Used Percentage = '+str(DISK_perc))

然后执行：

chmod +x get.py

python get.py

预期输出结果如下：

CPU Temperature = 53.0

CPU Use = 13.5

RAM Total = 497.0 MB

RAM Used = 116.0 MB

RAM Free = 381.0 MB

DISK Total Space = 3.6GB

DISK Used Space = 1.8GB

DISK Used Percentage = 53%