I did a little reading online, and I think that the Apache Access Log contains all of the requests sent to the server. However, I couldn't gather from the websites whether this is actually stored in an accessible text file, or in some other manner. If it is stored in a file, where is this file on the default Mac Apache install?
Look for 'CustomLog' and 'ErrorLog' in your Apache configuration files, which are under /etc/apache2/httpd.conf
Also see the documentation, at http://httpd.apache.org/docs/current/logs.html
RHEL / Red Hat / CentOS / Fedora Linux Apache error file location - /var/log/httpd/error_log
Debian / Ubuntu Linux Apache error log file location - /var/log/apache2/error.log
FreeBSD Apache error log file location - /var/log/httpd-error.log
To find exact apache log file location, you can use grep command:
# grep ErrorLog /usr/local/etc/apache22/httpd.conf # grep ErrorLog /etc/apache2/apache2.conf # grep ErrorLog /etc/httpd/conf/httpd.conf