Distributed programming in more efficient remote shell environment with direct data forwarding and lazy connection release

In this paper, we propose a distributed programming tool working in a form of programming in the large. We developed an enhanced remote shell, named `Ersh´. Ersh works in two modes, simple mode and distributed programming mode. Simple mode provides similar environment to rsh. For the case of distributed programming mode, Ersh adopts a direct data forwarding, a lazy connection release and an asynchronous parallel execution. The direct data forwarding directly transmits result data without intervention of local host and the lazy connection release maintains the data connection. Ersh also provides the asychronous parallel execution of arguments evaluations and default anonymous guest login. And a server daemon called `Ershd´ cooperates with Ersh. Using above mechanisms, Ersh provides a more convenient and efficient distributed computing environment