anchor.diff:  
   [source, bash]
   ----
  -export GRAILS_HOME=/path/to/grails-3.2.4
  +export GRAILS_HOME=/path/to/grails-4.0.1
   ----
   
   On Windows you can create an environment variable under `My Computer/Advanced/Environment Variables`
  
positive.code: 
  [source, bash]
  ----
  export GRAILS_HOME=/path/to/grails-3.2.4
  export PATH="$PATH:$GRAILS_HOME/bin
  ----
  
  
negative.code: 
  [source, bash]
  ----
  $ unzip ~/Downloads/grails-4.0.1.zip
  ----
  
  Edit your `.bashrc` (most Linux flavors) or `.bash_profile` file with the following environment variables (add these to the end of the file)
  