Create self-signed SSL certificate for Nginx

gistfile1.sh

#!/usr/bin/env bash
usage () {
    echo -e "Usage:\nself-signed-cert-gen.sh DOMAIN";
}

# Parse command line options
DOMAIN=""
while [ $# -gt 0 ]
do
    case "$1" in
        -*)
            usage
            exit 1
        ;;
        *)
            if [[ ${DOMAIN} != "" ]]; then
                usage
                exit 1
            fi
            DOMAIN="$1"
            shift
        ;;
    esac
done

echo "Generating an SSL private key to sign your certificate..."
openssl genrsa -des3 -out ${DOMAIN}.key -passout pass:client11 1024

echo "Generating a Certificate Signing Request..."
openssl req -new -key ${DOMAIN}.key -out ${DOMAIN}.csr -passin pass:client11 -subj "/C=RU/ST=Moscow/L=Moscow/O=Network/OU=Any Department/CN=${DOMAIN}"

echo "Removing passphrase from key (for nginx)..."
mv ${DOMAIN}.key ${DOMAIN}
openssl rsa -in ${DOMAIN} -out ${DOMAIN}.key -passin pass:client11
rm ${DOMAIN}

echo "Generating certificate..."
openssl x509 -req -days 365 -in ${DOMAIN}.csr -signkey ${DOMAIN}.key -out ${DOMAIN}.crt
rm ${DOMAIN}.csr

echo "Copying certificate (${DOMAIN}.crt) to root/etc/ssl/certs/"
mkdir -p root/etc/ssl/certs
mv ${DOMAIN}.crt root/etc/ssl/certs/

echo "Copying key (${DOMAIN}.key) to root/etc/ssl/private/"
mkdir -p root/etc/ssl/private
mv ${DOMAIN}.key root/etc/ssl/private/