[debbugs-tracker] bug#27803: closed (dd by default prints output to stderr instead of stdout)

[GNU bug Tracking System]

Your message dated Mon, 24 Jul 2017 10:13:20 -0500
with message-id <address@hidden>
and subject line Re: bug#27803: dd by default prints output to stderr instead 
of stdout
has caused the debbugs.gnu.org bug report #27803,
regarding dd by default prints output to stderr instead of stdout
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
27803: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=27803
GNU Bug Tracking System
Contact address@hidden with problems

--- Begin Message --- Subject: dd by default prints output to stderr instead of stdout Date: Mon, 24 Jul 2017 20:04:27 +0530

Hi,

When I run a dd command successfully, it actually  prints I/O statistics to standard error and not stdout . Is not it suppposed to print it on stdout by default for a good run?

Thanks,

Vasanth

--- End Message ---

--- Begin Message --- Subject: Re: bug#27803: dd by default prints output to stderr instead of stdout Date: Mon, 24 Jul 2017 10:13:20 -0500 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

tag 27803 notabug
thanks

On 07/24/2017 09:34 AM, vasanth kumar wrote:
> Hi,
> 
> When I run a dd command successfully, it actually  prints I/O statistics to
> standard error and not stdout . Is not it suppposed to print it on stdout
> by default for a good run?

No, POSIX requires that it print stats to stderr.
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/dd.html
"STDERR

    On completion, dd shall write the number of input and output blocks
to standard error...."

Therefore, the behavior is intentional, and I'm closing this as not a
bug.  However, feel free to reply to this thread if you have further
questions on the topic.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

signature.asc
Description: OpenPGP digital signature

--- End Message ---