title: Where's the module files for the build-in Apache in Snow Leopard
body: <p>I'm new to Mac OS X and I'm going to do some dev work under Snow Leopard.
  I enabled the build-in apache and found things below in file etc/apache2/httpd.conf:</p>
  
  <p>LoadModule alias_module libexec/apache2/mod_alias.so
  LoadModule rewrite_module libexec/apache2/mod_rewrite.so
  LoadModule bonjour_module     libexec/apache2/mod_bonjour.so</p>
  
  <p>But I cannot find the "libexec" directory in my system, did I make something wrong?</p>