Um simples BeanShell script que "printa" o própio source code.

get_it.bsh

// declare function //
load_text(filename) {
  
  size = 1024; // declare buffer stream //
  
  // read given filename //
  fin = new BufferedReader (new InputStreamReader (new FileInputStream (filename)), size);
  
  // assign empty string //
  text = ""; line = "" ;
  
  // when not reach the end on current line //
  while((line = fin.readLine()) != null) 
  { // return more one line again on data //
    text += line;
    
    // put at the end of line a new line //
    text += "\n"; }
  
  fin.close(); // close the file //
  
  // return all data from filename //
  return text ;

} // end of function

// output this current filename //
print ("Filename: " + getSourceFileInfo() + "\n");

// output this current source //
print (load_text(getSourceFileInfo()));