docs+tools: improve ndnsec help, error messages, and manual page
Exit with status code 2 on malformed command line
Refs: #3777
Change-Id: Id682a5d69c15c74cfa1903db38b5389936f5be58
diff --git a/docs/manpages/ndnsec-cert-gen.rst b/docs/manpages/ndnsec-cert-gen.rst
index 25c6427..97e8e87 100644
--- a/docs/manpages/ndnsec-cert-gen.rst
+++ b/docs/manpages/ndnsec-cert-gen.rst
@@ -8,7 +8,7 @@
::
- $ ndnsec-cert-gen [-h] [-S timestamp] [-E timestamp] [-I info] [-s sign-id] [-i issuer-id] request
+ ndnsec-cert-gen [-h] [-S timestamp] [-E timestamp] [-I info] [-s sign-id] [-i issuer-id] request
Description
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