picoin.sh

#!/bin/bash

BASEURL="https://bitcoin.org/bin"
ARCH="arm-linux-gnueabihf"
VER=$(curl -s https://api.github.com/repos/bitcoin/bitcoin/releases | grep -m 1 tag_name | awk -F\" '{print $4}' | cut -c 2-)
DIR="bitcoin-core-$VER"
FILE="bitcoin-$VER-$ARCH.tar.gz"
FILEURL="$BASEURL/$DIR/$FILE"
SHA256HASH=$(curl -s $BASEURL/$DIR/SHA256SUMS.asc | grep $FILE | awk '{print $1}')

if [ ! -f "$FILE" ]
then
echo "Downloading $FILEURL"
curl -sO $FILEURL
fi

shastatus=$(sha256sum $FILE | grep $SHA256HASH)
if [ "$?" -ne "0" ]
then
echo "The SHA256 has for $FILE should be $SHA256HASH. Please try again"
exit 1
fi