code: @Override
  	public boolean execute(final LineReader reader, final String[] parts, final SqlConfig sqlConfig,
  			final Properties props) {
  		showMessage(reader.getTerminal(), "/this.txt");
  
  		return true;
  	}
docs: {@inheritDoc}
  
  @see jp.co.future.uroborosql.client.command.ReplCommand#execute(org.jline.reader.LineReader, java.lang.String[], jp.co.future.uroborosql.config.SqlConfig, java.util.Properties)