Hello Raspberry Pi

Linux command free display amount of free and used memory in the system. This example run the command "free -h" using Python, to display memory usage. It work on Raspberry Pi and also other Linux.

#Linux command free - Display amount of free and used memory in the system
# Example:
#pi@raspberrypi ~ $ free -h
# total used free shared buffers cached
#Mem: 863M 272M 591M 0B 19M 174M
#-/+ buffers/cache: 77M 785M
#Swap: 99M 0B 99M
#
# This sample run "free -h" in Python and get the result 
import os 
def getFreeDescription():
 free = os.popen("free -h")
 i = 0
 while True:
 i = i + 1
 line = free.readline()
 if i==1:
 return(line.split()[0:7])
 
def getFree():
 free = os.popen("free -h")
 i = 0
 while True:
 i = i + 1
 line = free.readline()
 if i==2:
 return(line.split()[0:7])
# Disk information
description = getFreeDescription()
mem = getFree()
print(description)
print(mem)
print(description[0] + " : " + mem[1])
print(description[1] + " : " + mem[2])
print(description[2] + " : " + mem[3])
print(description[3] + " : " + mem[4])
print(description[4] + " : " + mem[5])
print(description[5] + " : " + mem[6])

Run on Raspberry Pi 2/Raspbian:

Run on Ubuntu Linux: