# `@lerna/diff` > Diff all packages or a single package since the last release Install [lerna](https://www.npmjs.com/package/lerna) for access to the `lerna` CLI. ## Usage ```sh $ lerna diff [package] $ lerna diff # diff a specific package $ lerna diff package-name ``` Diff all packages or a single package since the last release. > Similar to `lerna changed`. This command runs `git diff`.