Digital Ocean update my dns record

do-dns.sh

#!/bin/bash

domain=example.com
token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

#get record_id from this command
#curl -X GET -H "Content-Type: application/json" -H "Authorization: Bearer $api" "https://api.digitalocean.com/v2/domains/$domain/records"
record_id=88888888

current_ip="$(\
curl -X GET -H "Content-Type: application/json" -H "Authorization: Bearer $token" "https://api.digitalocean.com/v2/domains/$domain/records/$record_id" \
	| sed -e 's/[{}]/''/g' | awk -v k="text" '{n=split($0,a,","); for (i=1; i<=n; i++) print a[i]}' | grep -Po '"'"data"'"\s*:\s*"\K([^"]*)' \
	)"
external_ip="$(curl diagnostic.opendns.com/myip)"

# compare existing dns record vs current public ip
if [ "$external_ip" != "$current_ip" ] ; then
	# update when diff

	curl -X PUT -H "Content-Type: application/json" -H "Authorization: Bearer $token" -d '{"data": "'$external_ip'" }' \
		"https://api.digitalocean.com/v2/domains/$domain/records/$record_id"
fi