Autoflush is something you do in your program, to control the output of your program , not something you can do to other programs

Other than changing your invocation (sudo ... ) there is nothing you can do

You say sudo ... works from bash, but does  sudo ... |perl -pe 1 work the same?

In reply to Re^3: Autoflush fails by Anonymous Monk
in thread Autoflush fails by sophate

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