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Where does the "Hello World!" example come from? [duplicate]

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Where does ‘Hello world’ come from?

"Hello world!" is the most commonly used example I can think of, yet I don't really know where it came from. Was it used by some particular book, or did it just spread among developers? Did people write "Hello world!" snippets in COBOL or FORTRAN ?


Just a quick search on wikipedia gaves : http://en.wikipedia.org/wiki/Hello_world_program#History

The first known instance of the usage of the words "hello" and "world" together in computer literature occurred earlier, in Kernighan's 1972 Tutorial Introduction to the Language B

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