pack.java

import com.google.common.io.ByteStreams;

import java.io.*;

import java.net.URL;


/**
 * Simple auto-packing application.
 */
public class pack {

  public static void main(String[] args) throws IOException {
    File script = new File("barge.sh");

    URL url = pack.class.getProtectionDomain().getCodeSource().getLocation();

    OutputStream fos = null;

    try {
      fos = new FileOutputStream(script);

      InputStream headerStream = pack.class.getClassLoader().getResourceAsStream("script-header");
      InputStream inputStream = url.openStream();

      ByteStreams.copy(headerStream, fos);
      ByteStreams.copy(inputStream, fos);

      script.setExecutable(true);
    } finally {

      if (fos != null)
        fos.close();
    }

  }
}