| # index-files |
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| ### Name |
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| `demo-index-files` - Index all files under a directory. |
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| ### Synopsis |
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| ```console |
| lucene demo index-files <INDEX_DIRECTORY> <SOURCE_DIRECTORY> [-u|--update] [?|-h|--help] |
| lucene demo index-files [-src|--view-source-code] [-out|--output-source-code] |
| ``` |
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| ### Description |
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| This demo can be used to learn how to build a Lucene.Net index. After the index has been built, you can run the [search-files demo](search-files.md) to run queries against it. |
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| ### Arguments |
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| `INDEX_DIRECTORY` |
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| The directory of the index. |
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| `SOURCE_DIRECTORY` |
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| The source directory containing the files to index. This directory will be analyzed recursively. |
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| ### Options |
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| `?|-h|--help` |
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| Prints out a short help for the command. |
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| `-u|--update` |
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| Adds new documents to an existing index. If not supplied, any existing index in the `INDEX_DIRECTORY` will be overwritten. |
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| `-src|--view-source-code` |
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| Prints the source code to the console. Use `SPACE` or `n` to move to the next page of text, `ENTER` to scroll to the next line of text, `q` or `x` to quit. |
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| `-out|--output-source-code <DIRECTORY>` |
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| Outputs the source code to the specified directory. |
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| ### Example |
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| Indexes the contents of `C:\Users\BGates\Documents\` and places the Lucene.Net index in `X:\test-index\`. |
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| ```console |
| lucene demo index-files X:\test-index C:\Users\BGates\Documents |
| ``` |
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