Log File Analysis
Regex Applications - Lesson 4
25 min
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Common Log Formats
Concept
Server logs follow standard formats like Common Log Format (CLF) and Combined Log Format. Each has predictable structure for parsing.
Example
127.0.0.1 - - [10/Oct/2000:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326
Practical Application
Understand log format before writing regex - structure determines parsing strategy