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21 lines
1.5 KiB
Markdown
21 lines
1.5 KiB
Markdown
3 years ago
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# Note ID
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Each note is uniquely identified by its path relative to the [notebook](notebook.md)'s root. However, in some cases it is more convenient to refer to a "note ID", which is the unique part of its filename. For example, the note ID of the file `200911172034 An interesting concept.md` is `200911172034`. You could have several notes named "An interesting concept", but only one with the ID `200911172034`.
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The purpose of using a unique identifier in your note filenames is to create stable links between your notes, which will not break even if you change the title of the linked note. [See this reference for more information](https://zettelkasten.de/introduction/#the-unique-identifier).
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There are several flavors of note IDs and `zk` supports most of them. You can set it up in the [note configuration](config-note.md).
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## Random ID
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A random ID enables short and memorable unique identifiers. By default, `zk` is configured to generate random IDs of four alphanumeric characters. I found this to be the sweet spot between an easily memorable and usable ID and enough candidates. This default setting can generate 1 679 616 unique IDs.
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## Timestamp
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Another common ID is a timestamp in the `YYYYMMDDHHMM` shape. This is less readable than a short random ID, but has the added advantage of being sortable by creation date. However, I find this not so useful in practice.
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## Sequential IDs
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Sequential (incremented) IDs are currently not supported by `zk`. They get ugly very quickly when deleting outdated notes and have an irregular shape.
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