gsp - How to link from a page to another in Grails -

I know that in HTML, if we have a button, then we want to link it to another page, From which we can use the following tags: & lt; A href = "#" & gt; Button & lt; / A & gt;

Although I tried to do this for the people doing this work, it is taking me to an empty page:

In view / admin / admin .gsp I have a button that I / admin / gm.gsp

  & lt; Li & gt; & Lt; A href = "user \ mzein \ file_down \ grails-app \ ideas \ admin \ gm.gsp" & gt; GM & lt; / A & gt; & Lt; / Li & gt;   
 I also received  & lt; G: link & gt;  Tags: 
 
  & lt; G: link resource = "gm" & gt;  
 
 But this was not working and did not take me for a path page error. Is the problem I'm designing the wrong path? Or is not it how it works in greases? 
 
 I know how to use controllers, but is it only going from one page to another? 
 
 I use url mapping for such a task 
 
  class UrlMappings {static mapping = {"/ $ controller / $ action? / $ Id? (. $ Format)" "}": "}" / "/" (Resource: 'gm')}}     
 
 
 You < Li>  attribute like  createLink  tag . 
 
  
 
 
 $ {CreateLink (uri: 'somepath / gm.gsp')} & gt; GM  
 < P>  Edit:  OK you need to map the request  as the  file   "/ foo / bar" ( See: "Path / Test")  
 
 and  g: link  make this a similar request 
 
  & lt; G: link controller = "foo" action = "bar" name = "someName"> GM & lt; / G: link & gt;  and  path  is the path to the directory in the View folder that contains  test.gsp .