Script to create SSL self signed certificate

openssl_selfsigned

#!/usr/bin/env bash

set -o errexit


## Functions
function usage(){
  echo "Usage: $0 -d <domain> [-t <time_in_days>]"
}


## Get options
while getopts "d:t:" option
do
  case "${option}"
    in
      d) DOMAIN=${OPTARG};;
      t) DAYS=${OPTARG};;
  esac
done

if [ "x${DOMAIN}" == "x" ]
then
  usage
  exit 1;
fi

if [ "x${DAYS}" == "x" ]
then
  DAYS="365"
fi


## Execute
openssl genrsa -out "$DOMAIN".key 2048
openssl req -new -x509 -key "$DOMAIN".key -out "$DOMAIN".crt -days "$DAYS" -subj /CN="$DOMAIN"
chmod 0640 "$DOMAIN".key
cat "$DOMAIN".key "$DOMAIN".crt > "$DOMAIN".pem