2026-02-18 06:55:01 -07:00
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# regex
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> Regular expressions (`regex`) are patterns used to match, search, and manipulate text.
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> Note: `regex` isn't a command, but syntax to be used with other commands.
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> See also: `egrep`, `glob`.
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2026-02-18 06:55:01 -07:00
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> More information: <https://cheatography.com/davechild/cheat-sheets/regular-expressions/>.
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- Match any single character:
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`.`
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- Match the start of a line:
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`^{{hello}}`
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- Match the end of a line:
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`{{world}}$`
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- Match zero or more repeated characters:
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`{{a}}*`
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2026-08-06 22:19:46 -06:00
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- Match one character in a set of characters:
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2026-02-18 06:55:01 -07:00
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`[{{abc}}]`
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- Match ranges of characters:
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`[{{a-z}}][{{3-9}}]`
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- Match anything but the specified character:
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`[^{{a}}]`
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- Match a boundary around a word:
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`"\b{{text}}\b"`
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