# security > Administer Keychains, keys, certificates and the Security framework. > More information: . - List the available keychains: `security list-keychains` - Delete a specific keychain: `security delete-keychain {{path}}` - Create a keychain: `security create-keychain -p {{password}} {{keychain.name}}` - Set a certificate to use with a website or [s]ervice by its [c]ommon name (fails if several certificates with the same common name exist): `security set-identity-preference -s {{URL|hostname|service}} -c "{{common_name}}" {{path/to/file.keychain}}` - Add a certificate from file to a [k]eychain (if -k isn't specified, the default keychain is used): `security add-certificates -k {{keychain.name}} {{path/to/file.pem}}`