[U-Boot] [BUG] cmd : 'env exists envvar' does not display the existence of environment variable

Wolfgang Denk wd at denx.de
Tue Oct 15 19:07:45 UTC 2019

Dear Adarsh,

In message <CAJgxa7ev2Zao61SDjOt+2k5qJfDxiY1bwTqmcFg=G4iSk-u7KQ at mail.gmail.com> you wrote:
> Could you *please clarify* couple of my queries* regarding posting
> questions* to the mailing list.

I can try...

> + Most of the postings in the mailing list are observed to be code patches.
> Could we also post our observations/opinions on the code/commands/issues on
> a particular u-boot release and
> discuss with other u-boot contributors??

Of course you can also just ask questions.  But as you probably see,
this is a pretty high volume mailing list, so there is always a
chance that such messages may be missed.

> If yes, is there any specific string (similar to [PATCH] for a patch or a
> [BUG] for a bug etc) to be mentioned in the subject line??

No, there is no such tag.  But it is always a good idea to add the
custodian for the affected sub-system on Cc: ; normally you can find
such information in the MAINTAINERS file, or try using the
scripts/get_maintainer.pl tool.  in case of environment code you
just have bad luck, as the entry for MAINTAINERS has not been added
yet to mainline (but it was seen on the mailing list).

> 1.[U-Boot] cmd: clarification on 'env ask' command execution
> 2.Unable to delete the hush shell local variables
> Both of them were not forwarded by the moderator (not sure what was wrong ).

I can see 1. at https://lists.denx.de/pipermail/u-boot/2019-October/386682.html

> I re-sent the second query yesterday to the mailing list with subject line
> "*[U-Boot] [BUG] cmd : Local Hush Variable Could not be deleted* "
> and it got forwarded.

You can avoid that your messages need a maintainer's attention by
subscribing to the mailing list.  there is tons of spam messages
that need to get manually cleaned up, and it's easy to miss a
regular posting, especially if the subject line is not clear enough.

> So, any specific guidelines to post queries/observations/bugs for
> discussion will be definitely helpful
> and keep us going.
> + For newbies, could you  suggest any pre-requisites, initial documents or
> guidelines to follow while they
> explore u-boot ( from user/tester/developer perspective ).

I found it always useful to read and remember the recommendations
posted in [1].

[1] http://www.catb.org/%7eesr/faqs/smart-questions.html

Best regards,

Wolfgang Denk

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
The only perfect science is hind-sight.

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