remoteshellclient.java

java写的用于远程执行程序的shell程序

import java.net.*;
import java.io.*;
import java.util.*;


class RemoteShellClient
{
	public static void main (String[] args)
	{
		if(args.length==4)
		{	
			int nPort = new Integer(args[1]).intValue();
			if(nPort>0)
			{
				try
				{
					// connect to the given server at the given port
					Socket sockClient = new Socket(args[0],nPort);
					// open input and output streams to the server
					BufferedOutputStream outStream = new BufferedOutputStream(sockClient.getOutputStream());
					BufferedInputStream inStream = new BufferedInputStream(sockClient.getInputStream());
					// send the command to the server
					SockData.Write(outStream,args[2].getBytes(),args[2].length());
					// send the input of the command to the server
					SockData.Write(outStream,args[3].getBytes(),args[3].length());
					// read output from the server and display 
					// the output in the console window
					while(true)
					{
						byte[] pOutput = SockData.Read(inStream);
						if(pOutput.length>0)
						{
							System.out.write(pOutput);	
						}
						else break;	
					}
					SockData.Write(outStream,null,0);
					// clean up
					inStream.close();
					outStream.close();
					sockClient.close();
				}
				catch(Exception e)
				{
					System.out.println(e.getMessage());	
				}
			}
			else System.out.println("Invalide port number");
		}
		else System.out.println("Invalide argument count");	
	}
}