Updated DNS description
#check if there is sudo installed, AND if the current user is a sudoer.
remove dependency to "sha256sum" and "base64"
h2b: my own hex to bin. remove dependency to 'xxd' tool
Remove extra space
Chown directories to parent
FORCE=1 then we also need to regenerate the CSR
Fix typo
supprt apache server plugin
fix issue: sed contains "&" sign
support Standalone server
fix renewAll
polish install/uninstall messages.
minor, change base64 encoding
fix error message
Opps, fix cert format
add ca cert
fix centos and openssl