Work with app/console in Symfony at Mac OS X
===

I've installed Symfony on Mac Os X and do:
   
    chmod -R 777 app/cache app/log

Try do this:
 
    php app/console cache:clear

And get back error:

    [RuntimeException]                                                                        
    Unable to write in the "/Users/anton/Sites/local/Symfony/app/cache/dev" directory 

Try to fix it! Thanks! 