Note that to copy between two folders, one doesn’t need to use SFTP. One can copy from one folder to another without involving the SFTP protocol which is primarly used to copy files remotely, either from the local machine to a remote machine, or from a remote machine to (the same or a different) remote … Read more
For executing multiple commands in sequence, you can create a command string like below: String script =”pbrun su – user; cd /home/scripts;./sample_script.sh” Execute it and pass this string to your method above.
You need to override the getJSch method in your custom factory class: class CustomConfigSessionFactory extends JschConfigSessionFactory { @Override protected JSch getJSch(final OpenSshConfig.Host hc, FS fs) throws JSchException { JSch jsch = super.getJSch(hc, fs); jsch.removeAllIdentity(); jsch.addIdentity( “/path/to/private/key” ); return jsch; } } Calling jsch.removeAllIdentity is important; it doesn’t seem to work without it. A caveat: I … Read more
The channel does not close itself when there is no input left. Try closing it yourself after you have read all data. while (true) { while (inputStream.available() > 0) { int i = inputStream.read(buffer, 0, 1024); if (i < 0) { break; } System.out.print(new String(buffer, 0, i));//It is printing the response to console } System.out.println(“done”); … Read more
These are ANSI escape codes that are normally interpreted by a terminal client to pretty [color] print the output. If the server is correctly configured, you get these only, when you use an interactive terminal. In other words, if you requested a pseudo terminal for the session (what you should not, if you are automating … Read more
Disabling the StrictHostKeyChecking option will make the connection less secure than having the option enabled, because it will let you connect to remote servers without verifying their SSH host keys. If the option is enabled, you will only be able to connect to servers which keys are known to your SSH client. You will have … Read more
The most trivial way to upload a file over SFTP with JSch is: JSch jsch = new JSch(); Session session = jsch.getSession(user, host); session.setPassword(password); session.connect(); ChannelSftp sftpChannel = (ChannelSftp) session.openChannel(“sftp”); sftpChannel.connect(); sftpChannel.put(“C:/source/local/path/file.zip”, “/target/remote/path/file.zip”); Similarly for a download: sftpChannel.get(“/source/remote/path/file.zip”, “C:/target/local/path/file.zip”); You may need to deal with UnknownHostKey exception.
Your OpenSSH ssh connection is using rsa-sha2-512 key signature. While that does not prove that your server requires it, it’s quite probable that it does. JSch does not support rsa-sha2. And as JSch seems not to be updated anymore, it quite likely never will. There’s a fork of JSch that does though: https://github.com/mwiede/jsch At least … Read more
You have a Kerberos/GSSAPI authentication set as the preferred, yet you do not seem to actually use/want it. As you do not specify any username or password for the Kerberos prompts. This problem can appear spontaneously, when either Kerberos gets installed on the the client PC or the server starts to support Kerberos. The solution … Read more
An overview about the differences and similarities between these streams you can find at »Shell, Exec or Subsystem Channel« in the JSch wiki. Here some details for your use case. In the exec channel, the commands come from the command string you did give with setCommand(). The SSH server will pass them at once to … Read more