Named Entity Recognition 25.4
Named Entity Recognition User and Programming Guide

# About the edktool Command-Line Tool

The `edktool` command-line tool for Named Entity Recognition allows you to compile and test your grammars. You can use `edktool` to:

- compile grammars.
- list available entities in a grammar file.
- extract entities from a file based on a grammar and select entities from the grammar for extraction.
- test the accuracy of the extraction process.

NOTE: On Linux, `edktool` requires the C++ library, `libstdc++.so`. To ensure the tool can locate the required library, set the Library Path:

`setenv LD_LIBRARY_PATH bin:$LD_LIBRARY_PATH`

For a full list of the command-line options that you can use with edktool, see edktool Command-Line Options.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Named Entity Recognition 25.4

Topic Title: About the edktool Command-Line Tool