tldr/pages/common/look.md

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# look
> Display lines beginning with a prefix in a sorted file.
> Note: the lines in the file must be sorted.
> See also: `grep`, `sort`.
> More information: <https://man.openbsd.org/look>.
- Search for lines beginning with a specific prefix in a specific file:
`look {{prefix}} {{path/to/file}}`
- Case-insensitively ([f]) search only on alphanumeric characters ([d]):
`look -f -d {{prefix}} {{path/to/file}}`
- Specify a string [t]ermination character (space by default):
`look -t {{,}}`
- Search in `/usr/share/dict/words` (`-d` and `-f` are assumed):
`look {{prefix}}`