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 # python-csr
-Generate a CSR/Key via Python
+# Generate a key, self-signed certificate, and certificate request.
+# Usage: csrgen <fqdn>
+# 
+# When more than one hostname is provided, a SAN (Subject Alternate Name)
+# certificate and request are generated.  This can be acheived by adding -s.
+# Usage: csrgen <hostname> -s <san0> <san1>