*/5 * * * * /home/youruser/getBalance.sh

#!/bin/bash
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBalance","params":["YOURADDRESS", "latest"],"id":1}' 'http://localhost:PORT'

import requests
import json
def balance(address, url):

        postData = {"jsonrpc":"2.0","method":"eth_getBalance","params":[address, "latest"],"id":1}
        #print('p: {}'.format(postData))
        response = requests.post(url, data=json.dumps(postData))
        print(response.json())
        result = response.json()
        return result['result']

def writebalance(balance):
        with open('getBalance.txt', 'w') as f:
                f.write(balance)

def readbalance():
        with open('getBalance.txt', 'r') as f:
                bal = f.read()
        return bal


if __name__ == '__main__':
        oldbalance = readbalance()
        newbalance = balance("YOURADDRESS", 'http://localhost:8545')
        if int(newbalance, 16) - int(oldbalance, 16) >0:
                print('toto')
        writebalance(newbalance)

// web3 contract
var web3Contract = new web3.eth.Contract(abi, address);

// dagger contract
var contract = dagger.contract(web3Contract);
var filter = contract.events.Transfer({room: 'latest'});

// watch
filter.watch(function(data, removed){
    // data.returnValues.to : address to which it has been transferred to
    // data.returnValues.value : value which has been transferred
});

// watch only once
filter.watchOnce(function(data, removed){
    // data.returnValues.to : address to which it has been transferred to
    // data.returnValues.value : value which has been transferred
});

// stop watching
filter.stopWatching();