For the Apache documentation of the config_log_module, which contains fairly detailed instructions, go to: http://httpd.apache.org/docs/mod/mod_log_config.html
Here's a quick example from my own log file configuration:
I set up instructions for (1) what NOT to log, and then (2) a simplified log:
SetEnvIf Request_URI mast|frames|navbar|home_content|.gif|.jpg|.png|.js|.css|.cgi$ donotlog
LogFormat "%{\"%d/%b/%Y\",%H:%M:%S}t,%h,\"%{Referer}i\",\"%U%q\"" jblog
To use these, I went to the "VirtualHost" section for the host I wanted to log, and included:
CustomLog logs/access_log jblog env=!donotlog
The first instruction (what NOT to log) simply reads the requested URI, and checks for any of the strings (separated by pipes).
Then the "CustomLog" instruction in the VirtualHost config says: "Use the 'jblog' format (identified by the 'jblog' at the end of the LogFormat), but do not include anything in the 'donotlog' instruction (again identified by the name of the instruction, at its terminus)."
Hope this helps...experiment a little!
James
