mo/demo/important-file

#!/bin/bash

cd "$(dirname "$0")"/..

date-string() {
    date
}
wrapper() {
    echo -n "*** $(cat) ***"
}

export IP=127.0.0.1
export ALLOWED_HOSTS=( 192.168.0.1 192.168.0.2 192.168.0.3 )

. ./mo  # Keep in mind this script is executing in the parent directory
cat <<EOF | mo
# {{#wrapper}}OH SO IMPORTANT{{/wrapper}}
# This file automatically generated at {{date-string}}
home_ip={{IP}}

# ALLOWED HOSTS
{{#ALLOWED_HOSTS}}allowed_host={{.}}
{{/ALLOWED_HOSTS}}{{^ALLOWED_HOSTS}}# No allowed hosts{{/ALLOWED_HOSTS}}

# DENIED HOSTS
{{#DENIED_HOSTS}}denied_host={{.}}
{{/DENIED_HOSTS}}{{^DENIED_HOSTS}}# No denied hosts{{/DENIED_HOSTS}}
EOF