Unix & Linux: Difference between ＞/dev/null 2＞&1 & and ＜/dev/null &＞/dev/null &

Unix & Linux: Difference between ＞/dev/null 2＞&1 & and ＜/dev/null &＞/dev/null &

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shell standard streams redirection order OR 2＞&1 1＞/dev/null vs 1＞/dev/null 2＞&1
shell standard streams redirection order OR 2＞&1 1＞/dev/null vs 1＞/dev/null 2＞&1
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