Cleanup is a best-effort to remove all temporary files created by process.

Run takes a command string, executes the command, Blocks until the output is finished and returns a *Command that is an io.Reader.

Runner accepts commands from a channel and sends a bufio.Reader on the returned channel.

UnknownExit is used when the return/exit-code of the command is not known.

BufferSize determines how much output will be read into memory before resorting to using a temporary file.

WaitingMultiplier determines how many finished processes can be waiting before Runner blocks waiting for the slowest process finishes.

Command contains a buffered reader with the realized stdout of the process along with the exit code.

Options holds the options to send to Runner.

CallBack is an optional function the user can provide to process the stdout stream of the called Command.