Originally Posted by pilotbob
How do you folks know that the Linux was modified? Linux embedded may be being used as it was distributed. The propritary software may be the reader they wrote. I see alot of assumtions being made in this thread, and not alot of facts. You are perfectly welcome to run software on Linux and not release the code to that software. It is not a component or modification of the Linux OS.
Yes, you're free to modify and run whatever GPL code you want as long as you don't distribute it. Once you do, you're required to provide end users with the exact source code you used or with instructions on how to reproduce your binaries. If it wasn't modified, then you can provide links to the original packages you used. If it was, you can provide just patches. The end goal is the same: the end user should be able to recreate the binary equivalent to what you distributed.