So, enabling the module is pretty simple, assuming you’ve got it installed. Pretty sure it’s a default module though, it should be at least, but then again it should also be enabled by default in my opinion. Anway, you just need to make a symbolic link to the rewrite.load file from the mods-available directory to the mods-enabled directory (all found in your apache2 directory, usually found at /etc/apache2).

QUICK ANSWER:
Open a terminal and run the following:

$ cd /etc/apache2/mods-enabled
$ ln -s /etc/apache2/mods-available/rewrite.load rewrite.load

NOTES:
There are couple of things to note here. First, we are assuming that Apache is installed at /etc/apache2 on your system. We are also assuming that you have the rewrite module file rewrite.load in your /etc/apach2/mods-available directory. Finally it is important to note that when running the second line in the terminal, the one creating the symbolic link, you have to enter the full path to the file in the first parameter. You can’t shorthand it or enter it as a relative path.

Also, you can do a quick check of your mods-enabled directory. If there’s a link to the rewrite.load file already in there, this solution obviously isn’t going to work for you, so good luck.

Hope this saves someone else six hours of their life.

apachectl graceful

Expecting Apache to restart/start I was surprised to get this error:

launchctl: CFURLWriteDataAndPropertiesToResource( /System/Library/LaunchDaemons/org.apache.httpd.plist) failed: -10

After searching around online for a bit I realized that my problem was I failed to enter the command as root (or I forgot to put sudo in front of my command.
With a second attempt I entered:

sudo apachectl graceful

And vuala, apache is on. No errors. However, now when I enter:

sudo apachectl status

I get this error:

/usr/sbin/apachectl: line 106: lynx: command not found

Not sure what that’s about. If anyone’s got any ideas, I’d appreciate it.