Basic script to run against Bitcoin bitcoind server on LAN

getchaintips.sh

#!/usr/bin/env bash
# Basic script to run against Bitcoin bitcoind server on LAN
# Ref: Bitcoin Core getchaintips RPC command: https://bitcoincore.org/en/doc/0.21.0/rpc/blockchain/getchaintips

set -eou pipefail
IFS=$'\n\t'
# Set variables ----
user=XXXXXX
password=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
node_ip=192.168.0.XXX
# End --------------

port=8332

data=$(
	cat <<-EOF
		{
			"jsonrpc": "1.0",
			"id": "curltest",
			"method": "getchaintips"
		}
	EOF
)

# Add -vvvv for verbose output/debugging
curl \
	-vvvv \
	--user "${user}:${password}" \
	--data-binary "$data" \
	-H 'content-type: text/plain;' \
	"${node_ip}:${port}"