Here are some very useful open-ssl commands :

To check openssl version :

openssl version -a

**Check information in a certificate : **

openssl x509 -text -in api_cert_chain.crt

List of all available ciphers:

openssl ciphers -v

List available TLSv1 ciphers :

openssl ciphers -v -tls1

List only ciphers with High encryption:

openssl ciphers -v 'HIGH'

List ciphers with high encryption and using the AES algorithm for encryption:

openssl ciphers -v 'AES+HIGH'