Script to send e-mail on new transactions in bitcoin

trans-check.sh

#!/bin/bash
RET=`/usr/local/bin/bitcoind --rpcconnect listtransactions`
RETCNT=`echo ${RET}|php -r '$x = file_get_contents("php://stdin");$a=json_decode($x);echo count($a);'`
LASTCNT=`cat ~/gen-check.last 2>/dev/null`
if [ "$LASTCNT" == "" ]; then
        LASTCNT=0
fi
if [ $RETCNT -gt $LASTCNT ]; then
        echo "sound the alarm, we have transactions"
        echo "`date` ${RET}" | sendemail -q -f from@gmail.com -t to@gmail.com -u "BITCOIN TRANSACTIONS!" -s smtp.gmail.com:587 -o tls=auto -xu from@gmail.com -xp password-of-from-gmail
        echo ${RETCNT} >~/gen-check.last
        sync
        exit 0
fi
echo "its ok"