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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run():
 """Main script entry to handle the arguments given to the script."""

    _parser_options()
    set_verbose(args["verbose"])
    
    if _check_global_settings():
        _load_db()
    else:
        exit(-1)

    #Check the server configuration against the script arguments passed in.
    _setup_server()

    if args["rollback"]:
        _server_rollback()
        okay("The server rollback appears to have been successful.")
        exit(0)

    _server_enable()    
    _list_repos()
    _handle_install()
    
    #This is the workhorse once a successful installation has happened.
    _do_cron()