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Re: Fwd: read -t 0 fails to detect input.
From: |
Martin Schulte |
Subject: |
Re: Fwd: read -t 0 fails to detect input. |
Date: |
Fri, 20 Dec 2019 08:57:47 +0100 |
Hello!
> Could you please comment about this assertions:
>
> 1.- bash will either do a select() or an ioctl(FIONREAD), or neither
> of them, but not both, as it should for it to work. read -t0 is broken.
> 2.- Conclusion: read -t0 is *broken* in bash. Don't use it. –
No. It works as intended. It's not usable in a pipe in the way you try,
but this is caused by the principles of a pipe, not by a bug in read.
while ! read -t 0; do
echo 'It works as intended - just press RETURN to see why'
done
Best regards,
Martin