On 03/20/2015 12:25 PM, jd1008 wrote: > Man page says only choices are > u > and > m > > Does not mention a - preceding either one. Look at the usage you quoted, and I snipped. It lists -m, but not simply m. In fact, I don't know off-hand of a command that allows you to specify an option without either a single or double dash in front of it.