openssl version [-a] [-v] [-b] [-o] [-f] [-p]
This command is used to print out version information about OpenSSL.
all information, this is the same as setting all the other flags.
the current OpenSSL version.
the date the current version of OpenSSL was built.
option information: various options set when the library was built.
The output of openssl version -a would typically be used when sending in a bug report.
The -d option was added in OpenSSL 0.9.7.