code: public void setPostTransScript( final String script) {
  		setPostTransProgram(readProgram(script));
  		if ( script != null) format.getHeader().createEntry( POSTTRANSSCRIPT, script);
  	}
docs: Declares a script to be run as part of the RPM post-transaction. The
  script will be run using the interpreter declared with the
  {@link #setPostTransProgram(String)} method.
  
  @param script Script contents to run (i.e. shell commands)