Bourne Shell script to create self-signed certs

fast_sslcert.sh

#!/bin/sh

# We can set our CN using it as an argument
[ -n "$1" ] && CN=$1 || CN=localhost

# RSA params
RSA=2048
DAYS=365

# subj Params
C=HU
ST=Latveria
L=Doomstadt
O=CastleDoom
OU=IT
emailAdress=admin@localhost.localdomain

# Do It
openssl req -new -newkey rsa:$RSA -days $DAYS -nodes -x509 \
            -subj "/C=$C/ST=$ST/L=$CN/O=$O/OU=$OU/CN=$CN/emailAddress=$emailAdress" \
            -keyout $CN.key -out $CN.cert > /dev/null 2>&1

# Print the certs
echo "# $CN.key"
cat $CN.key
echo "# $CN.cert"
cat $CN.cert