Make a Copy of a File on Remote SSH Server

Demonstrates how to make a copy of a file on a remote SSH server by running the "cp" command. This works if your server is Linux or Unix-based. For Windows-based servers, use the DOS "copy" command.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    //  Important: It is helpful to send the contents of the
    //  ssh.LastErrorText property when requesting support.

    CkSsh ssh = new CkSsh();

    //  Any string automatically begins a fully-functional 30-day trial.
    boolean success;
    success = ssh.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Connect to an SSH server:
    String hostname;
    int port;

    //  Hostname may be an IP address or hostname:
    hostname = "192.168.1.117";
    port = 22;

    success = ssh.Connect(hostname,port);
    if (success != true) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Wait a max of 5 seconds when reading responses..
    ssh.put_IdleTimeoutMs(5000);

    //  Authenticate using login/password:
    success = ssh.AuthenticatePw("myLogin","myPassword");
    if (success != true) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Open a session channel.  (It is possible to have multiple
    //  session channels open simultaneously.)
    int channelNum;
    channelNum = ssh.OpenSessionChannel();
    if (channelNum < 0) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  In this example, we'll copy wine.html to wine2.html
    //  The "cp" command has no output (i.e. nothing is written to
    //  the standard output) so we'll include an "echo FINISHED"
    //  so we can programmatically retrieve the output and close
    //  the channel.  Closing the channel immediately after sending
    //  the command is not good because w/ some SSH servers
    //  it introduces a race condition where the command may not
    //  be executed if the server thinks the client has disconnected.
    success = ssh.SendReqExec(channelNum,"cp wine.html wine2.html && echo FINISHED");
    if (success != true) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Read the channel until we receive the FINISHED string.
    success = ssh.ChannelReceiveUntilMatch(channelNum,"FINISHED","ansi",true);
    if (success != true) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Close the channel:
    success = ssh.ChannelSendClose(channelNum);
    if (success != true) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Let's pickup the accumulated output of the command:
    //  (In this case, it will be the string "FINISHED")
    String cmdOutput;
    cmdOutput = ssh.getReceivedText(channelNum,"ansi");
    if (cmdOutput == null ) {
        System.out.println(ssh.lastErrorText());
        return;
    }

    //  Display the remote shell's command output:
    System.out.println(cmdOutput);

    //  Disconnect
    ssh.Disconnect();
  }
}