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Re: How are stdout output and stderr output ordered with respect to each
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From: |
Ole Tange |
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Subject: |
Re: How are stdout output and stderr output ordered with respect to each other? |
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Date: |
Thu, 22 Feb 2018 23:56:04 +0100 |
On Tue, Feb 13, 2018 at 12:49 AM, Peng Yu <pengyu.ut@gmail.com> wrote:
> The following example shows that the order of the stdout/err output is
> not maintained. It seems that stdout always goes earlier than stderr.
> Is it so?
Yes. But more importantly: stdout is printed to stdout, and stderr is
printed to stderr.
> Is there a way to make the order to be the same as if gnu parallel is
> not called.
Yes: -u
The problem is if you want buffering of output, you cannot put
timestamps on each byte in an efficient manner. Thus you cannot tell
which byte was written first.
/Ole