import optparse
import sys

import config

parser = optparse.OptionParser()

parser.add_option("-e", nargs=2, dest="confval", metavar="VALUE")

(options, args) = parser.parse_args()

if options.confval:
    if not config.Configuration().option_exists(options.confval[0]):
        print "%s: error: %s is not a valid configuration option" % (sys.argv[0], options.confval[0])
        exit(1)
    print "Setting", options.confval[0], "to", options.confval[1]
    config.Configuration().