Use JSch sudo example and Channel.setPty for running sudo command on remote host

Question

I have used JSch Sudo example under following link:

http://www.jcraft.com/jsch/examples/Sudo.java.html

And changed it a bit and get rid of all the dialogs as

Answer 1

I have similar code in a project I am working on, and was getting the same error. I resolved this using the setPty(true) as you did.

I think you're getting this error because you don't close out the streams in your code. If you are using Java 1.7, you can use a resource block as follows:

try( InputStream in=channel.getInputStream() ) {
    try( OutputStream out = channel.getOutputStream() ) {
    ...
    }
}

or the try...finally block pattern from past versions.