bake cakephp configure console profile

i've just installed CakePHP and I'm pretty new with Mac,Shells and Terminal.. Cakephp is now running correctly and as stated by my tutorial (Beginning-Cakephp-from novice to professional) i'm now trying to configure console profile to run Bake (i'm on MAMP also).
I typed in the Terminal:

vi .profile

then I inserted an alias:

alias cake="/Applications/MAMP/bin/php5.3/bin/php /Applications/MAMP/htdocs/luca/cake/cake/console/cake.php"

If I go trying for $ cake bake now i receive the message:

-bash: /Applications/MAMP/bin/php5.3/bin/php: Permission denied

what's wrong?

thanks
Luca

P.S I saw few other tutorial that used to edit .profile with exporting a path..what's the difference and how does it works?

Solution

I can bake actually if I navigate to mydir/cake/console, and then run the command

$ ./cake bake