A certificate file might contain just one certificate or multiple certificates (the whole certification chain for example).
openssl x509 -noout -text -in <path_and_file_name>
To display certificates, keys and certificate revocation lists
openssl storeutl -noout -text <path_and_file_name>
To display only contained certificates
openssl storeutl -noout -text -certs <path_and_file_name>
To display only contained keys
openssl storeutl -keys -noout -text <path_and_file_name>
To display only certificate revocation lists
openssl storeutl -keys -noout -text <path_and_file_name>