What is Common Log Format?

The common logfile format is as follows:

             
   remotehost [1]rfc931 authuser [date] "request" status bytes
             
   remotehost
               
   Remote hostname (or IP number if DNS hostname is not available), or if
              
   DNSLookup is Off.
               
   [2]rfc931
              
   The remote logname of the user.
              
   authuser
              
   The username as which the user has authenticated himself. [date]
              
   Date and time of the request.
              
   "request"
            
   The request line exactly as it came from the client: status
               
   The HTTP status code returned to the client: bytes
               
   The content-length of the document transferred.
              

* The Common Logfile Format