How to to choose which .hex file to upload at the command line?

I would like to build my platformio arduino project, rename the .hex file, e.g. adding to its name the build date time, and than send only the .hex file to a third person upload it to the arduino board, without the need of sending the project source. Can platformio upload only a generic .hex file, without the source/project? If its possible, how to do it?