I'm trying to use a usb-to-rs232 adapter to send a serial command to a device connected to the rs232 port.  When I login into screen using screen /dev/cu.usbserial 9600 and then enter my command from within the screen program, I get the expected response.What I'm now trying to do is send a single serial command via a command line, but can't get my syntax quite right.Here's an example of what I'm trying:screen -dmS -p 0 /dev/cu.usbserial 9600 MVUP...where MVUP with a carrier return is all I'm needing to send.  I don't need to read a response back.  Environment is OS X 10.7 and using the default bash shell.
How to send serial command via Screen via the command line
gnu screen