#DGPLUG

mfree.py

#!/usr/bin/env python2

def read_file(filename, numlines) :
  '''
    reads the first numlines of lines from filename
  '''
  d = []
  with open(filename) as f :
    for line in f :
      if numlines == 0 :
        break
      else :
        d.append(line)
      numlines -= 1
  return d
  
def parse_line_info(lineval) :
  '''
    returns the numerical part of a string in the format a:   b c
  '''
  lst = lineval.split(" ")
  kb_val = lst[-2]
  return kb_val

def KB2MB(value) :
  '''
    converts kilobyte value to mega byte value and appends  MB at the end
  '''
  mbval = (int(v) * 1.0) / 1024
  return str(mbval) + " MB"

if __name__ == "__main__" :
  file_lst = read_file("/proc/meminfo", 3)
  for values in file_lst :
    print KB2MB(parse_line_info(values))