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Which is the universally known convention everyone is born with inherent knowledge of. Also, people read man-pages.

• Aloisius 2y ago
  What person diving into their shell's source code on Linux doesn't read manpages? Or even man's manpage at least once?
  • Joker_vD 2y ago
    Daniel Huang, the one that wrote TFA? People are different, I don't know what else to tell you. But generally, people don't read man pages or docs.