Hello there. I am searching for a solution using rails and carrierwave (for Uploads). After a file has been uploaded, I need to submit some data (filename and parameters) to another binary on the machine (for content validation and so on). I think the process call (from my upload controller / carrierwave) would be corresponding way, to run the external validation. What is the best way to run an external
binary (with parameters) and collect stdout, stderr and the corresponding exit code from rails? Should I use popen3?