I’m creating an app and one of its functions must be unpacking of a rar archive. I found couple of command line tools like here: http://www.rarlab.com/download.htm and here: http://unarchiver.c3.cx/commandline, but they require preliminary installation to be launched with a command line. So how can my app launch any other app (child process) to unpack a rar file? I code using FireMoneky with C++ Builder (under Windows) and so far I can’t find there any cross-platform function to extract rar, that’s why I came up with an idea of extracting for Mac through a command line. Maybe my whole idea is wrong and not doable because of Mac security reasons. Would appreciate any input here. Thanks!