Hacker News on 23 July 2018

• Google: Security Keys Neutralized Employee Phishing
• Machine Learning Guides
• Our experience launching a paid, proprietary product on Linux
• Be Nice and Write Stable Code
• Xv6, a simple Unix-like teaching operating system
• Why some PhDs are quitting academia for unconventional jobs
• Show HN: Checklist of over 100 directories to submit your startup
• What was it like to be a software engineer at NeXT?
• Devhints: A collection of developer cheatsheets
• ReactOS 0.4.9 released