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Chapter 31. Indexing and Adding an Onlin... > Implementing a Grepping Search Engin...

Implementing a Grepping Search Engine

Grepping search engines share a common methodology: Start at an arbitrary point in the directory tree, open each HTML file in the tree, and search the file for the search term. Optionally, the engine might recursively follow each subsequent directory branch encountered and repeat the search process.

This allows for unsophisticated searches, although it is possible to enable support for searches using regular expressions.


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