Run ant exec task from different folder

Question

I want to run my "exec grails" task into my grails project. I set grail path in exec task like

 <exec executable="${grails}"

How can I say , that exec should start from my project folder?

Answer 1

From the exec Ant task documentation:

Attribute    Description
dir          the directory in which the command should be executed.

<exec executable="${grails}" dir="${my.project.dir}">