# codesign > Create and manipulate code signatures for macOS. > More information: <https://keith.github.io/xcode-man-pages/codesign.1.html>. - Sign an application with a certificate: `codesign --sign "{{My Company Name}}" {{path/to/application_file.app}}` - Verify the certificate of an application: `codesign --verify {{path/to/application_file.app}}`