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

> Display lines beginning with a prefix in a sorted file.
> See also: `grep`, `sort`.
> More information: <https://keith.github.io/xcode-man-pages/look.1.html>.

- Search for lines beginning with a specific prefix in a specific file:

`look {{prefix}} {{path/to/file}}`

- Case-insensitively search only on alphanumeric characters:

`look {{[-f|--ignore-case]}} {{[-d|--alphanum]}} {{prefix}} {{path/to/file}}`

- Specify a string termination character (space by default):

`look {{[-t|--terminate]}} {{,}}`

- Search in `/usr/share/dict/words` (`--ignore-case` and `--alphanum` are assumed):

`look {{prefix}}`
