Akamai hosts updater

akamai.sh

#!/bin/bash

domain=$1
origin="example-origin.net"
file=/etc/hosts
fqdn=

if [ $# -lt 1 ]; then
    echo "Usage: $(basename "$0") DOMAIN [{production|staging|origin|off}]" >&2
    exit 1
fi

if [ $# -eq 1 ]; then
    grep "$domain " "$file" || echo "$domain: no manual host entry"
    exit
fi

sudo -v || exit 1
sudo sed -i '.bak' "/$domain/d" "$file"

# base string for edge hostname
base=$(dig +short "$domain" | head -1 | sed 's/.edgekey.net.$//')
[ -z "$base" ] && base=$domain

case "$2" in
    prod|production|live)
        fqdn="$base.edgekey.net"
        ;;
    stg|staging)
        fqdn="$base.edgekey-staging.net"
        ;;
    origin)
        fqdn="$domain.$origin"
        ;;
esac

if [ -n "$fqdn" ]; then
    ip=$(dig +short "$fqdn" | grep -v '\.$' | tail -n 1)
    [ -n "$ip" ] && printf "%-15s %-30s # %s\n" "$ip" "$domain" "$fqdn" | sudo tee -a $file >/dev/null || echo "$fqdn: not found" >&2
fi

diff --ignore-all-space -u "$file.bak" "$file" | grep '^[+-]' || echo "No changes were made"