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Adding informations for the command-line usage #33

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Adding informations for the command-line usage #33

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9 changes: 9 additions & 0 deletions README.md
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Expand Up @@ -36,6 +36,15 @@ It's part of the video URL: `https://www.youtube.com/watch?v=<VideoID>`.
| https://www.youtube.com/watch?v=abc123def45 | abc123def12 |
| https://youtu.be/abc123def45 | abc123def45 |

**Nota:**

If `<VideoID>` begins with a dash, if you use it directly, you will see an error message: error: `unknown option '-…'`, where `…` is the second character of `<VideoID>` after the dash `-`.

Remark: the quotes around the `<VideoID>` are optional, and ineffective to suppress the error message in this case.

To work around this behavior, please use before `<VideoID>` the double dash (`--`), which terminates the list of command-line options (according to the POSIX specification).

So, if the video URL is `https://www.youtube.com/watch?v=-abc123def45`, it's `<VideoID>` is `-abc123def45`, and you will use this command line: `$ youtube-comment-scraper [options] -- -abc123def45`.

### Options

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