Generate a rolling bar graph of load average

barload.py

#!/usr/bin/env python
import time
import sys

CEILING=10
WIDTH=80

def get_loadavg():
    f = open('/proc/loadavg','r')
    line = f.read()
    f.close()
    l1 = line.split(" ")[0]
    return float(l1)

while True:
    l1 = get_loadavg()
    prefix = ""
    if(len(sys.argv) > 1 and sys.argv[1] == "-p"):
        loadf = "%03.3f" % l1
        prefix = loadf +": "
        LWIDTH=WIDTH-len(prefix)
    else:
        LWIDTH=WIDTH
    nbars = int(LWIDTH*(float(l1/CEILING)))
    print prefix+nbars*"#"
    time.sleep(1)