Why does ^nul>^ hang the system?

U

u on2021-05-07 08:49:15

cmd/bat

u on, 2021-05-07 08:49:15

^ nul>^
How does this code (bat) work, and why does it hang windows?
Why does it only work in bat file and not in cmd?

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V

Vladimir Korotenko, 2021-05-07
@firedragon

The system device nul redirects output to an indefinite place, apparently to stdout in cmd, apparently the interpreter works according to somewhat different rules