@colucix: I thought sunlinux meant cycling between two or more processes, putting putting all but one into a stopped state while one runs.
@sunlinux: if that is what you mean, you can probably do it with shell scripts, but it'll be a little ugly. You'll have to start several processes in the background (using the & symbol at the end of the command), then send signals with the kill command. SIGSTOP will stop a process running, SIGCONT will wake it up again. You can sleep between the swap over operation with the sleep command, but the resolution is 1 second, hence my original question.