what's inadequacy between "&> foo" "> foo 2>&1"?


there seem twin whack idioms redirecting stdout stderr file:



fooscript &> foo


... ...



fooscript > foo 2>&1


what's difference? seems me initial only by-pass second one, nonetheless colleague contends second furnish cost even there's an blunder initial redirect, since initial removed route errors stdout.



edit: okay... seems bargain i am asking, i try clarify:



can anyone give me an instance where twin specific lines lines combined above furnish opposite behavior?



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