bash-heredoc-curl-password

ping_btc.sh

#!/bin/bash

user=
pass=""
host_port=127.0.0.1:8332

echo password...
read -s pass

while true; do
	echo $(curl "http://$user:$pass@$host_port" \
		--silent \
		--header 'Content-Type: text/plain;' \
		--data-binary @- <<- EOF
			{
				"jsonrpc": "1.0",
				"id": "",
				"method": "getblockcount",
				"params": []
			}
		EOF
	) | jq '.result'

	sleep 10
done