How to redirect output of a bash script to screen on the fly?

Question

I'm running a one-line script that should have multi-stage output:

#!/bin/bash

ansible-playbook deploy-master.yml -i ./inventories --private-key=$HOME/.ssh/id_rsa

however it won't show anything until its execution is finished (after which it will print all outputs of ansible-playbook). How do I fix this?

Answer 1

It seems like the easiest solution is to switch shebang line to:

!/usr/bin/env bash

I don't know the reason but it just worked.