Troubles with grunt.js when calling it from bash script

When i call grunt (https://github.com/gruntjs/grunt), from same directory with grunt.js it is working ok.

But, if i try to make such bash script called "build.sh":

#!/bin/bash
`grunt grunt.js`

and when i call ./build.sh it gives following error:

./build.sh: line 2: Running: command not found

I tried to specify full path to grunt, also tried to specify full path to grunt.js file with config, but it don't want to work :(

What i'm missing?

You don't need the ` marks, because that means "substitute the output of the command". All you want is

#!/bin/bash
grunt grunt.js

Alternatively, exec grunt grunt.js.