# look > Display lines beginning with a prefix in a sorted file. > See also: `grep`, `sort`. > More information: . - 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 [t]ermination character (space by default): `look -{{t|-terminate}} {{,}}` - Search in `/usr/share/dict/words` (`--ignore-case` and `--alphanum` are assumed): `look {{prefix}}`