How to show some system info with a Python script?

• Create a Python script, for instance in a directory called /home/pi/Code (create the directory if it doesn’t exist yet):
  sudo nano /home/pi/Code/system_info.py

• Add the following code to the file:
  import subprocess
  import os
  def get_ram():
  “Returns a tuple (total ram, available ram) in megabytes. See www.linuxatemyram.com”
  try:
  s = subprocess.check_output([“free”,”-m”])
  lines = s.split(‘\n’)
  return ( int(lines[1].split()[1]), int(lines[2].split()[3]) )
  except:
  return 0def get_process_count():
  “Returns the number of processes”
  try:
  s = subprocess.check_output([“ps”,”-e”])
  return len(s.split(‘\n’))
  except:
  return 0def get_up_stats():
  “Returns a tuple (uptime, 5 min load average)”
  try:
  s = subprocess.check_output([“uptime”])
  load_split = s.split(‘load average: ‘)
  load_five = float(load_split[1].split(‘,’)[1])
  up = load_split[0]
  up_pos = up.rfind(‘,’,0,len(up)-4)
  up = up[:up_pos].split(‘up ‘)[1]
  return ( up , load_five )
  except:
  return ( ” , 0 )def get_connections():
  “Returns the number of network connections”
  try:
  s = subprocess.check_output([“netstat”,”-tun”])
  return len([x for x in s.split() if x == ‘ESTABLISHED’])
  except:
  return 0def get_temperature():
  “Returns the temperature in degrees C”
  try:
  s = subprocess.check_output([“/opt/vc/bin/vcgencmd”,”measure_temp”])
  return float(s.split(‘=’)[1][:-3])
  except:
  return 0def get_ipaddress():
  “Returns the current IP address”
  arg=’ip route list’
  p=subprocess.Popen(arg,shell=True,stdout=subprocess.PIPE)
  data = p.communicate()
  split_data = data[0].split()
  ipaddr = split_data[split_data.index(‘src’)+1]
  return ipaddrdef get_cpu_speed():
  “Returns the current CPU speed”
  f = os.popen(‘/opt/vc/bin/vcgencmd get_config arm_freq’)
  cpu = f.read()
  return cpu

  print ‘Free RAM: ‘+str(get_ram()[1])+’ (‘+str(get_ram()[0])+’)’
  print ‘Nr. of processes: ‘+str(get_process_count())
  print ‘Up time: ‘+get_up_stats()[0]
  print ‘Nr. of connections: ‘+str(get_connections())
  print ‘Temperature in C: ‘ +str(get_temperature())
  print ‘IP-address: ‘+get_ipaddress()
  print ‘CPU speed: ‘+str(get_cpu_speed())

• Save the file and make it executable:
  sudo chmod +x system_info.py

• Execute the script:
  python /home/pi/Code/system_info.py

There are many more system settings that could be added to the script! 😉