code: function findProcessWithIndex( index, callback ) {
    var i, process;
    try {
      forever.list(false, function(context, list) {
        i = list ? list.length : 0;
        while( --i > -1 ) {
          process = list[i];
          if( process.hasOwnProperty('file') &&
            process.file === index ) {
            break;
          }
          process = undefined;
        }
        callback.call(null, process);
      });
    }
    catch( e ) {
      error( 'Error in trying to find process ' + index + ' in forever. [REASON] :: ' + e.message );
      callback.call(null, undefined);
    }
  }
docs: Locates running process previously started by forever based on index file, and notifies callback. Will notify of undefined if not found, other wise the unformatted process object.
  @param  {String}   index    Index filename.
  @param  {Function} callback Delegate method to invoke with either the found process object or undefined if not found.