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The process for linking a Java client program to a server program on a remote shell involves the following steps:

1. Write the server program code: The first step is to write the code for the server program that will listen for incoming requests from the client and respond accordingly. The server should be running on a remote machine.

2. Compile the server code: Once the server program code is written, it needs to be compiled using a Java compiler like javac.

3. Start the server program: Run the compiled server program on the remote machine so that it is ready to accept incoming requests from the client.

4. Write the client program code: Next, write the code for the Java client program that will communicate with the server program.

5. Compile the client code: Compile the client program code using a Java compiler like javac.

6. Establish a connection: In order to link the client program to the remote server program, the client needs to establish a connection to the server. Use the java.net.Socket class to create a connection to the server\'s IP address and port number.

7. Send and receive data: Once a connection is established, the client can send data to the server using the OutputStream of the Socket object. The server can respond by sending data back to the client through the InputStream of the Socket.

8. Close the connection: When the client is done communicating with the server, close the connection by calling the close() method on the Socket object.