I don't know how recently the ability to use the Arduino IDE from the command line with arguments like --upload and --port was introduced, but this is very helpful. I think the next step is to document these arguments in a --help message and/or in a manual page. The ability to get the IDE version with a --version command would also be useful.

P.S. I can find no documentation which tells me how to specify the board on the command line. It would be nice to have such documentation. Somewhere it says I should specify "--board package:arch:board" but I don't know where to get "package", "arch", and "board" for a given selection in the "Boards Manager". At least an example would help.

P.P.S. See also http://arduino.stackexchange.com/questions/15893/how-to-compile-upload-and-monitor-via-the-linux-command-line/24802#24802