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.

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.

Unfortunately not all of the OpenSSL commands were implemented for use with the engine. In particular, I needed to sign e-mails using the OpenSSL smime command. After looking over the source code for ...

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.