tldr/pages/linux/look.md

27 lines
759 B
Markdown

# look
> Display lines beginning with a prefix in a file.
> Note: the lines in the file must be sorted.
> See also: `grep`, `sort`.
> More information: <https://manned.org/look>.
- Search for lines beginning with a specific prefix in a specific file:
`look {{prefix}} {{path/to/file}}`
- Case-insensitively search only on blank and 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}}`
- Search in `/usr/share/dict/web2` (`--ignore-case` and `--alphanum` are assumed):
`look {{-a|--alternative}} {{prefix}}`