K 10 svn:author V 3 ian K 8 svn:date V 27 2019-06-18T01:15:00.697361Z K 7 svn:log V 268 Rearrange the argument checking and processing so that enable and disable can be combined with configuring the period and duty cycle (the same ioctl sets all 3 values at once, so there's no reason to require the user to run the program twice to get all 3 things set). END