cryptsetup - how does it print prompt bypassing stdout/stdin redirection? – unix.stackexchange.com

cryptsetup - how does it print prompt bypassing stdout/stdin redirection? – unix.stackexchange.com

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I just noticed that no matter which cryptsetup FDs are forwarded to /dev/null it still shows prompt for password. For example this still shows prompt: cryptsetyp luksOpen /dev/sdXY name >/dev/null ...

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