CakePHP. app/Console/cake: Permission denied for root user

Did you get this solve? I think this could do the trick. (Running the command from your app directory

 chmod +x Console/cake

In CakePHP Version 3 and above this is the right command.

chmod +x bin/cake

This is CakePHP documentation for reference.

Console

The cake executable has been moved from the app/Console directory to the bin directory within the application skeleton. You can now invoke CakePHP’s console with bin/cake.

Documentation link