code: function onWrite( error ) {
  		if ( error ) {
  			debug( 'Error encountered while attempting to write input data to a temporary file %s: %s', inFile, error.message );
  			return done( error );
  		}
  		exec( str, {'cwd':dir}, onExec );
  	}
docs: FUNCTION: onWrite( [error] )
  Callback invoked upon writing a file.
  
  @private
  @param {Error} [error] - error object
  @returns {Void}