OpenSSL> If this happens, simply type quit or press Ctrl-C to exit safely. It's only the OpenSSL internal command-line prompt. It doesn't have command-line editing and has no explicit help function.

SSL certificates are an integral component in securing data and connectivity to other systems. Learn tips on how you can use the Linux openssl command to find critical certificate details.

1. Update OpenSSL For Ubuntu and Debian systems, OpenSSL should be updated by issuing the apt-get update and apt-get install -y libssl1.0.0 openssl commands.