Raspberry Pi time measuring cron thing in Python because that's all I know

crontime.py

#!/usr/bin/env python2

import shutil, time, os

t = 0

def repeatable(t):
    shutil.copyfile("/proc/uptime", ("/home/pi/msr/%s" % value(t)))

while 1:
    os.chdir("/home/pi/msr")
    repeatable(t)
    time.sleep(60)