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16 package examples;
17
18 import java.io.IOException;
19 import org.apache.commons.net.bsd.RExecClient;
20
21 /***
22 * This is an example program demonstrating how to use the RExecClient class.
23 * This program connects to an rexec server and requests that the
24 * given command be executed on the server. It then reads input from stdin
25 * (this will be line buffered on most systems, so don't expect character
26 * at a time interactivity), passing it to the remote process and writes
27 * the process stdout and stderr to local stdout.
28 * <p>
29 * Example: java rexec myhost myusername mypassword "ps -aux"
30 * <p>
31 * Usage: rexec <hostname> <username> <password> <command>
32 * <p>
33 ***/
34
35
36 public final class rexec
37 {
38
39 public static final void main(String[] args)
40 {
41 String server, username, password, command;
42 RExecClient client;
43
44 if (args.length != 4)
45 {
46 System.err.println(
47 "Usage: rexec <hostname> <username> <password> <command>");
48 System.exit(1);
49 return ;
50 }
51
52 client = new RExecClient();
53
54 server = args[0];
55 username = args[1];
56 password = args[2];
57 command = args[3];
58
59 try
60 {
61 client.connect(server);
62 }
63 catch (IOException e)
64 {
65 System.err.println("Could not connect to server.");
66 e.printStackTrace();
67 System.exit(1);
68 }
69
70 try
71 {
72 client.rexec(username, password, command);
73 }
74 catch (IOException e)
75 {
76 try
77 {
78 client.disconnect();
79 }
80 catch (IOException f)
81 {}
82 e.printStackTrace();
83 System.err.println("Could not execute command.");
84 System.exit(1);
85 }
86
87
88 IOUtil.readWrite(client.getInputStream(), client.getOutputStream(),
89 System.in, System.out);
90
91 try
92 {
93 client.disconnect();
94 }
95 catch (IOException e)
96 {
97 e.printStackTrace();
98 System.exit(1);
99 }
100
101 System.exit(0);
102 }
103
104 }
105