How can I export intraday stock data into CSV from Interactive Broker or Yahoo Finance?

External question — Quantitative Finance Stack Exchange Author: Kevvy Kim Original post: https://quant.stackexchange.com/questions/34584 License: CC BY-SA 3.0 — https://creativecommons.org/licenses/by-sa/3.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Google Finance API seems to be down forever. Are there instructions or manuals for downloading intraday stock data into CSV files from Interactive Broker OR Yahoo Finance?