In my mind, the job of a manager or leader is not to work, but to motivate and coordinate the work of others. The main point being, if you supervise a team of five coders, your team should be able to create output exceeding the output of a group of six coders each coding independently (if not a little more, since I would imagine your salary is probably higher than a coder's).

I don't know how much work you do managing and how much extra time you have, but if I were a manager, I would be reading management books and websites. How do you attract talent? How do you help the employees which are slipping? How do you attain and then mantain a high level of work? How does your team fit into the grand scheme of things at your company? etc. I'd be way more worried about those questions than, say, what's the -T switch for?