using v4 of the cloudflare api, update an A record to match that of the current IP. Useful to run instead of ddns services

update-cloudflare-dns-v4-api.sh

## update a cloudflare dns a record to your current IP address

#get ZONE from cloudflare homepage for your app and use below where you see ZONE

#GET your dns record id to use in place of DNS_RECORD_ID with the following:
#1- get your email and key from cloudflare website (global API key)
#2- do a get call to https://api.cloudflare.com/client/v4/zones/ZONE/dns_records with the headers:
#x-auth-email and x-auth-key fields (your email and key from above)
#3-call will return an array of your dns records with their ID to use below - you will need your email and key again.

IP=$(curl -s https://canihazip.com/s)

curl -X PUT "https://api.cloudflare.com/client/v4/zones/ZONE/dns_records/DNS_RECORD_ID" \
     -H "X-Auth-Email: EMAIL" \
     -H "X-Auth-Key: APIKEY" \
     -H "Content-Type: application/json" \
     --data '{"type":"A","name":"dns","content":"'$IP'","ttl":120,"proxied":false}'