# eix > Utilities for searching local Gentoo packages. > Update local package cache using `eix-update`. > More information: . - Search for a package: `eix {{query}}` - Search for installed packages: `eix --installed {{query}}` - Search in package descriptions: `eix --description "{{description}}"` - Search by package license: `eix --license {{license}}` - Exclude results from search: `eix --not --license {{license}}`