#!/usr/bin/python

import sys
import os
from datetime import timedelta

if sys.argv[1] == "shutdown":
    print "Das System wird heruntergefahren"
    os.system("shutdown now")
elif sys.argv[1] == "reboot":
    print "Das System wird neugestartet"
    os.system("shutdown -r now")
elif sys.argv[1] == "uptime":
    with open('/proc/uptime', 'r') as f:
    uptime_seconds = float(f.readline().split()[0])
    uptime_string = str(timedelta(seconds = uptime_seconds))
    print(uptime_string[:-7])
#else:
#falls kein Argument zutrifft