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The Common Log Format, also known as the NCSA Common log format, is a standardized text file format used by web servers when generating server log files. Because the format is standardized, the files can be readily analyzed by a variety of web analysis programs, for example Webalizer and Analog. Each line in a file stored in the Common Log Format has the following syntax:
== Example == 127.0.0.1 user-identifier frank (-0700 ) "GET /apache_pb.gif HTTP/1.0" 200 2326 A "-" in a field indicates missing data. * ''127.0.0.1'' is the IP address of the client (remote host) which made the request to the server. * ''user-identifier'' is the RFC 1413 identity of the client. * ''frank'' is the userid of the person requesting the document. * ''(-0700 )'' is the date, time, and time zone when the server finished processing the request, by default in strftime format ''%d/%b/%Y:%H:%M:%S %z''. * ''"GET /apache_pb.gif HTTP/1.0"'' is the request line from the client. The method ''GET'', ''/apache_pb.gif'' the resource requested, and ''HTTP/1.0'' the HTTP protocol. * ''200'' is the HTTP status code returned to the client. 2xx is a successful response, 3xx a redirection, 4xx a client error, and 5xx a server error. * ''2326'' is the size of the object returned to the client, measured in bytes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Common Log Format」の詳細全文を読む スポンサード リンク
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