2024-12-27 23:14:37 -08:00
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[⬅️ Back to `index`](index.md)
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2024-12-28 13:14:08 -08:00
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# Unknown command
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2024-12-28 13:09:28 -08:00
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The Unknown Command reply (421, ERR_UNKNOWNCOMMAND in RFC 1459) is when the server doesn't recognise a command a client sends.
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```
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↗️ UNKNOWNCMD :something
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↙️ :server 421 nick UNKNOWNCMD :Unknown command
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```
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