...
# get the basic data
ipv4=$(curl -s -X GET -4 https://ifconfig.co)
ipv6=$(curl -s -X GET -6 https://ifconfig.co)

# If the current dynamic IPs match what's already in DNS, exit the script
# Added by Thomas 2024-02-19
if [ $check_record_ipv4 == $ipv4 ]; then
        echo -e "\033[0;37m [~] No change: The current IPv4 address ${ipv4} matches the existing DNS records ${check_record_ipv4}."
        exit 0
fi
if [ $check_record_ipv6 == $ipv6 ]; then
        echo -e "\033[0;37m [~] No change: The current IPv6 address ${ipv6} matches the existing DNS records ${check_record_ipv6}."
        exit 0
fi

user_id=$(curl -s -X GET "https://api.cloudflare.com/client/v4/user/tokens/verify" \
               -H "Authorization: Bearer $api_token" \
               -H "Content-Type:application/json" \
          | jq -r '{"result"}[] | .id'
         )

# write down IPv4 and/or IPv6
...

# ./cloudflare 
./cloudflare: line 14: [: missing `]'
grep: ]: No such file or directory
 [+] Your public IPv4 address: 11....