POSIX-1.2017, man7, where Ubuntu man pages are online and other distro manual pages, macOS man page differences, understanding shell built-ins vs commands, etc.

Yeah. I don’t think I have ever once seen a blog article point to primary sources. MDN, for example for web developers, not a primary source.

Sometimes I wonder if people ever ask themselves how people answering questions on Stack Overflow or people writing Medium articles found out what they’re teaching to others.

People are too afraid of reading documentation.