I have in the log file a following line:xxx.xxx.xxx.xxx;[05/Aug/2016:00:00:48 +0200];GET /extensions/css/example.css?rev=example HTTP/1.1;200;66931;http://www.example.com/page.htmlPlease explain me, what means the part between the date and the server answer? I'm a bit perplexed about it - it isn't a redirect URL, but what is it then?Edit:I come to decision, that i've completely misformulated my question - sorry for that.I don't mean with my question, what are the senses of certain url parts, like rev=example etc. I'm rather interesting, why are in the log entry two kinds of url: one of them, the first, beginning with GET, and the second at the entry's end.I thought firstly its a kind of redirect - but no, the answer code is 200. So what mean two urls / paths in this log entry?
What means the part between the date and the server answer in Apaches log?
apache log files
The first URL should be the file that is access, while the second one is the referrer, aka the file/page that made the browser access the first URL.You can configure what shows up in your log files. Typically by modifying the  'LogFormat' lines in your /etc/apache2/apache2.conf More information about what information you can show: http://httpd.apache.org/docs/current/mod/mod_log_config.html