> From: curl-users <curl-users-bounces_at_cool.haxx.se> On Behalf Of Ray Satiro
> Sent: Tuesday, September 11, 2018 3:35 PM
> To: curl-users_at_cool.haxx.se
> Subject: Re: Download Only If Newer
>
> On 9/11/2018 2:32 PM, Gerard Seibert wrote:
> > I am using curl 7.61.1 on an amd64 FreeBSD 11.2 machine.
> >
> > I am trying to download a file from SpamHaus, but only if it is newer. This is
> the command line syntax I am using:
> >
> > curl --s -L -R -z drop.txt -o drop.tmp
> > https://www.spamhaus.org/drop/drop.txt
> > Failed to set filetime 1536603588 on outfile: No such file or
> > directory
> >
> > As you can see, if the file is not newer, it produces an error message. I am
> trying to find a way to suppress that error message, but without any success.
> I have tried adding "2>&1" to the end of the command, but it doesn't help.
>
> curl's --silent is documented as "Don't show progress meter or error
> messages." [1] but does not go as far as changing the error stream which is
> what you are seeing [2]. That could be clarified or fixed. The reason
> 2>&1 doesn't work is because you are redirecting stderr to stdout which
> is unchanged. You could 2>/dev/null or 1>/dev/null 2>&1 or to a lesser
> extent --stderr /dev/null, but that last one won't stop a library libcurl uses
> from outputting to stderr (which should not happen but you never know).
> curl is trying to set the filetime [4] on a file that
> (presumably) doesn't exist which seems like a bug.
>
> [1]: https://curl.haxx.se/docs/manpage.html#-s
> [2]: https://github.com/curl/curl/blob/curl-7_61_1/src/tool_filetime.c#L136
> [3]: https://curl.haxx.se/docs/manpage.html#--stderr
> [4]:
> https://github.com/curl/curl/blob/curl-7_61_1/src/tool_operate.c#L1861-
> L1867

I am using Bash 4.4 here. I found that adding "&> /dev/null" to the command silenced the noise.

-- 
Gerard
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