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---
obj: application
repo: https://github.com/bensadeh/tailspin
---
# tailspin
A log file highlighter
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tailspin works by reading through a [log file ](../../dev/Log.md ) line by line, running a series of regexes against each line. The regexes recognize patterns like dates, numbers, severity keywords and more.
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tailspin does not make any assumptions on the format or position of the items it wants to highlight. For this reason, it requires no configuration or setup and will work predictably regardless of the format the [log file ](../../dev/Log.md ) is in.
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![Screenshot][Screenshot]
## Options
| Option | Description |
| -------------- | -------------------------------------- |
| `-f, --follow` | Follow (tail) the contents of the file |
| `-t, --tail` | Start at the end of the file |
[Screenshot]: data:image/avif;base64,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
