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[`grep`](https://en.wikipedia.org/wiki/Grep) is a CLI tool for\nsearching using Regexes.\n\nIn this challenge you'll build your own implementation of `grep`. Along the way\nwe'll learn about Regex syntax, how parsers/lexers work, and how regular\nexpressions are evaluated.\n\n**Note**: If you're viewing this repo on GitHub, head over to\n[codecrafters.io](https://codecrafters.io) to try the challenge.\n\n# Passing the first stage\n\nThe entry point for your `grep` implementation is in `src/Program.cs`. Study and\nuncomment the relevant code, and push your changes to pass the first stage:\n\n```sh\ngit commit -am \"pass 1st stage\" # any msg\ngit push origin master\n```\n\nTime to move on to the next stage!\n\n# Stage 2 \u0026 beyond\n\nNote: This section is for stages 2 and beyond.\n\n1. Ensure you have `dotnet (9.0)` installed locally\n1. Run `./your_program.sh` to run your program, which is implemented in\n   `src/Program.cs`.\n1. 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