---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# grex

> Generate regular expressions.
> More information: <https://github.com/pemistahl/grex>.

- Generate a simple regular expression:

`grex {{space_separated_strings}}`

- Generate a case-insensitive regular expression:

`grex -i {{space_separated_strings}}`

- Replace digits with '\d':

`grex -d {{space_separated_strings}}`

- Replace Unicode word character with '\w':

`grex -w {{space_separated_strings}}`

- Replace spaces with '\s':

`grex -s {{space_separated_strings}}`

- Add {min, max} quantifier representation for repeating sub-strings:

`grex -r {{space_separated_strings}}`
