远程外壳（英语：Remote Shell，缩写：RSH）是一个命令行的计算机进程，可以作为另一个用户运行shell命令到一个计算机网络的另一台计算机上。

RSH连接远程系统上运行rsh后台（RSHD）的。

The remote shell (rsh) is a command line computer program that can execute shell commands as another user, and on another computer across a computer network.

The remote system to which rsh connects runs the rsh daemon (rshd). The daemon typically uses the well-known Transmission Control Protocol (TCP) port number 514.