# Check if curl or wget commands exsit on your computer
if sys.version_info >= (3,0):
status_curl, result = subprocess.getstatusoutput('which curl')
status_wget, result = subprocess.getstatusoutput('which wget')
else:
status_curl, result = commands.getstatusoutput("which curl")
status_wget, result = commands.getstatusoutput("which wget")

if status_curl == 0:
    cmd='curl -g "'+cmd+'" -o '+ ncout
  elif status_wget == 0:
    cmd='wget "'+cmd+'" -O '+ ncout
  else:
    sys.exit('nThe script will need curl or wget on the system, please install them first before running the script !nProgram will exit now !n')