sending with bitcoind like things

send.sh

#!/bin/bash
set -v

# description on how this works
# requires the tool `bc` to be installed, and obviously, the coin cli
#
# https://stackoverflow.com/questions/38493893/heres-how-to-send-raw-transaction-btc-using-bitcoin-cli-command

# path to the command you are using
CLI="./bitcoin-cli"

# you may want to set this!
FEE=0.00001

# account or "label" as it is now known
ACCOUNT=$1
# where to send the monies
TO_ADDRESS=$2
# where to send any leftovers - miners get it otherwise
CHANGE_ADDRESS=$3

# you may need to tweak this, it presumes JSON of unspent has the fields listed inside the while loop
TXN="`$CLI listunspent 1 9999999 | grep -B3 -A2 "$ACCOUNT"`"

# total amount in account
TOTAL=0
while read -r TXID; do
    read -r VOUT
    read -r ADDRESS
    read -r ACCOUNT
    read -r SCRIPT_PUB_KEY
    read -r AMOUNT
    read -r line
    
    # extract the tx, vout, and amount of the unspent txn
    TXID=$(echo $TXID | cut -d'"' -f 4)
    VOUT=$(echo $VOUT | cut -d':' -f 2)
    VOUT=${VOUT::-1}
    AMOUNT=$(echo $AMOUNT | cut -d':' -f 2)
    AMOUNT=${AMOUNT::-1}

    # add it to the total amount and inputs
    TOTAL=$(echo $AMOUNT + $TOTAL | bc)
    INPUTS="{\"txid\":\"$TXID\",\"vout\":$VOUT},$INPUTS"
done <<< "$TXN"

# remove trailing ,
INPUTS=${INPUTS::-1}

# transfer everything!  if you don't do this, you'll need to enable the change in line below that calls createrawtransaction
AMOUNT=$TOTAL 

#deduct the fee (otherwise miners won't mine it)
AMOUNT=$(echo $AMOUNT - $FEE | bc)

#calculate the change
CHANGE=$(echo $TOTAL - $FEE | bc)

# SEND USING CHANGE 
# RAW_TX=$($CLI createrawtransaction "[$INPUTS]" "{\"$TO_ADDRESS\":$AMOUNT, \"$CHANGE_ADDRESS\":$CHANGE}")

# SEND WITHOUT CHANGE - ALL FUNDS SENT
RAW_TX=$($CLI createrawtransaction "[$INPUTS]" "{\"$TO_ADDRESS\":$AMOUNT}")
echo "CHANGE $CHANGE - if you didn't enable CHANGE_ADDRESS you lose this and it goes to the miners.  BEWARE"

# this is what it looks like before signing
echo RAW_TX: $RAW_TX

# now sign the transaction - wallet must be unlocked for this to work
SIGN_TX=$($CLI signrawtransaction $RAW_TX | grep "hex" | cut -d'"' -f 4)
echo SIGN_TX: $SIGN_TX

# WHEN YOU ARE SURE YOU WHAT YOU ARE DOING, UNCOMMENT THESE TO EXECUTE THE TX
# TX=$($CLI sendrawtransaction $SIGN_TX)
# echo "sent $AMOUNT in $TX"

echo "read the instructions in the script before using.  then delete this, and if you lose funds, it is not my fault!"