This is a program for the users to gernate their own self-signed certificate.

Usage:  ./apache2-ssl-certificate [[OPTION] [VALUE]]...

OPTIONS:
  -h | -help | --help -- To Show This Help
  -f | --force        -- Force to generate the cert
  -d | -days | --days -- cert to expire after x days, default is 365
  -p | -path | --path -- Path of the cert will be stored,
                         default is /etc/apache/ssl
  -n | -name | --name -- the name of the cert, default is apache
  -b | -bit  | --bit  -- length of the key, default is 1024