> For the complete documentation index, see [llms.txt](https://til.duyet.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://til.duyet.net/data-engineering/shell.md).

# Shell

- [MacOS's Touch ID on Terminal](https://til.duyet.net/data-engineering/shell/macoss-touch-id-on-terminal.md)
- [Using \`sed\` to find and replace in file](https://til.duyet.net/data-engineering/shell/using-sed-to-find-and-replace-in-file.md): sed = Stream EDitor
- [Merging contents of multiple .csv files into single .csv file](https://til.duyet.net/data-engineering/shell/merging-contents-of-multiple-.csv-files-into-single-.csv-file.md)