How to install rshd on Fedora 7.

[小波 顾]

Hi, I am new to Linux, here are some questions about rsh and rshd.
So far what I know about them are as following:
1. rshd is the server process running on  server machine to accept commands from clients.
2. rsh is the client utility used to connect remote rshd services and send commands.
3. rshd is often running as service on the server machine.
4. rsh is executed on demand, just like ps, pwd, etc.
 
Here are questions:
1. If some application use rsh to connect to the same machine to execute commands, does rshd have to run?
2. How to config rshd running as a service on Fedora 7? I have read some articles about using initd, but fedora 7 uses xinetd, which I am not familiar with.
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