How do I run grunt from a different folder than my root project

Question

Is there a way to tell grunt which grunt.js file to use?

I have an f:\\a\\b\\tools folder that contains grunt.cmd, node.exe,..., my actual web

Answer 1

Since grunt 1.3 you can omit --gruntfile.

So, instead of

grunt --base c\my_app --gruntfile c\my_app\GruntFile.js mytask

you can just

grunt --base c\my_app mytask (and --base can be replaced with -b)