On Wed, 2024-12-04 at 10:28 +0800, Tiezhu Yang wrote:
> On 12/03/2024 09:12 PM, Eric Gallager wrote:
> > On Tue, Dec 3, 2024 at 7:09 AM Tiezhu Yang <yangtie...@loongson.cn> wrote:
> > > 
> > > When executing the script download_prerequisites, the download speed may
> > > be extremely slow and there is no any output, the users do not know what
> > > happened.
> > > 
> > > Given the command wget and curl have options --verbose and --no-verbose,
> > > add them for download_prerequisites to give a chance to see the details.
> > > 
> > 
> > For how long have they had these options? My curl (8.10.1) doesn't
> > seem to be listing `--no-verbose` among its `--help all` list of
> > options...
> 
> In the curl man page [1] or "curl --manual | grep no-verbose",
> there is "--no-verbose", but there is no this option in the
> output of "curl --help". I do not know the internal history.
> 
> When executing the curl command, "--no-verbose" is a valid
> option but seems no effect like the option "--silent".
> 
> In the current code, "curl -LO --no-verbose" looks like
> somehow unreasonable, the output is not expected. Since
> wget is a frequently-used command, is it possible to
> remove the curl command in download_prerequisites?

Doing so may force many running CI systems to update their container
image.  Don't do that.

AFAIK --no-verbose just cancels out a prior --verbose and it's not same
as --quiet.  I.e. there are 3 different console output levels, --quiet,
--no-verbose (the default), and --verbose.

Try "curl --verbose example.org -Lo /dev/null", "curl example.org -Lo
/dev/null", and "curl --silent example.org -Lo /dev/null" yourself.


-- 
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University

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