Hacker News on 13 June 2017

• How is GNU `yes` so fast?
• Verizon closes $4.5B acquisition of Yahoo, Marissa Mayer resigns
• Chuck Thacker has died
• NumPy receives first ever funding, thanks to Moore Foundation
• Pistol sights
• The future of education is plain text
• Firefox 54: E10S-Multi, WebExtension APIs, CSS Clip-Path
• The most accurate map for August 21’s total solar eclipse
• The Holder Report on Uber
• Money can be stolen from an Uber account