Comments on: SSH Over Java

By: james

james — Sat, 13 Sep 2008 15:31:05 +0000

I think you need

toServer.flush()

after:

toServer.write(command.getBytes());

in your send method.

Also, not sure what the i counter in:

for (int i = 0; true; i++)

in your getServerResponse method is for?

Otherwise, your code was very helpful. Thank you. james

By: dip

dip — Wed, 25 Jun 2008 13:27:50 +0000

I have put some traces in
line no 68. if (line.contains(TERMINATOR) && (++count > 1)) {

but it never executes this trace

By: dip

dip — Wed, 25 Jun 2008 13:24:41 +0000

Thanks James for your kind reply.
I am a new to Java and trying to implement SSH using your example.

I am using your code like—-
con.connect(”user”, “passwd”, “server”, 22);
System.out.println(con.getServerResponse());
if (con.isConnected()) {
con.send(”ls -l”);
}
System.out.println(con.getServerResponse());

But I am not receiving any response for the cmd “ls -l”
Plz let me know if my understanding is correct.

By: James Carr

James Carr — Tue, 24 Jun 2008 12:21:56 +0000

@dip TERMINATOR is simply a constant that defines the terminating string in the server output,used to indicate that output is done.

By: dip

dip — Tue, 24 Jun 2008 11:59:01 +0000

What is the TERMILATOR doing?? Is it the command prompt?
I could not get the command prompt in “getServerResponse” method.

Can you plz let me know how to do that

By: Rai

Rai — Tue, 20 May 2008 15:19:13 +0000

Thanks for the example! Curl does not support an SSH shell interface. I like your method for handling the response.
Thanks again

By: Blacktek

Blacktek — Tue, 30 Oct 2007 12:52:56 +0000

This script doesn’t execute the commands on the remote server. At least not when I’m testing it with something like this:

—
ssh.connect(”usr”, “pwd”, “host”, 22);
ssh.sendSimple(”myservice start”);
System.out.println(ssh.getServerResponse());
ssh.disconnect();
System.exit(0);
—

I’ve also used the Exec.java example in jsch and it works otherwise, but then the scripts won’t see the needed system variables and I don’t know how to convert it to using shell channel instead of exec…

By: Abhik

Abhik — Sun, 05 Aug 2007 08:59:25 +0000

Ah! At last an example which demystifies the JSch Shell IO streams! I have been trying to crack this one for the last two days as I have to do something very similar to what you are doing!

Thanks very much James!

By: Adedib

Adedib — Wed, 11 Apr 2007 13:38:02 +0000

I don’t really understand where you will call the getServerResponse method ?

By: Eileen

Eileen — Tue, 14 Nov 2006 15:53:37 +0000

thanks for posting this code. the echo is a great idea.