Hide curl output

Question

I'm making a curl request where it displays an html output in the console like this

<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/domain/public_html/wp-content/themes/explicit/functions/ajax.php:87) in <b>/home/domain/public_html/wp-content/themes/explicit/functions/ajax.php</b> on line <b>149</b><br />......

etc

I need to hide these outputs when running the CURL requests, tried running the CURL like this

curl -s 'http://example.com'

But it still displays the output, how can I hide the output?

Thanks

Append `>/dev/null` at the end. Read more about File Descriptors on http://mywiki.wooledge.org/FileDescriptor?highlight=%28FD%29 — Valentin Bajrami, Apr 16 '15 at 09:19

FloHimself · Accepted Answer · 2018-08-14T08:33:14.110

515

From man curl

-s, --silent Silent or quiet mode. Don't show progress meter or error messages. Makes Curl mute. It will still output the data you ask for, potentially even to the terminal/stdout unless you redirect it.

So if you don't want any output use:

curl -s 'http://example.com' > /dev/null

edited Aug 14 '18 at 08:33

answered Apr 16 '15 at 09:20

FloHimself

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If you want only errors add the -S flag curl -s -S 'http://example.com' > /dev/null – Gonzalo Cao Nov 03 '16 at 11:55
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Note that you can't do `curl -o /dev/null`; it will throw a write error. – Keith Tyler Feb 10 '17 at 22:12
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But you can do `curl ... 2>/dev/null` to redirect stderr only. – Jesse Chisholm Sep 14 '17 at 20:23
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@KeithTyler `curl https://www.google.com -o /dev/null` succeeds without errors for me. I'm using `curl-7.58.0`. – x-yuri Apr 04 '18 at 13:29
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that in my opinion means `wget` should be used instead of `curl` for downloading files. – Vishrant Jan 18 '19 at 21:35

score 140 · Answer 2 · answered May 03 '17 at 05:46

140

This one looks more elegant to me:

curl --silent --output /dev/null http://example.com

Also, if you want to see the HTTP code:

curl --write-out '%{http_code}' --silent --output /dev/null http://example.com

Full documentation is here.

answered May 03 '17 at 05:46

yegor256

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If you still want errors to be shown you can add the `--show-error` parameter too. – Simon East Mar 26 '18 at 23:30
Even using -sS it still display the headers for me :( – Freedo Aug 27 '19 at 05:59

score 2 · Answer 3 · edited May 31 '21 at 09:32

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One way to hide cURL output in the bash shell, is to redirect both stdout and stderr using the operator &> to /dev/null

curl http://example.com &> /dev/null

edited May 31 '21 at 09:32

Kusalananda

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answered Oct 02 '20 at 20:13

Miguel Mota

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Hide curl output

3 Answers3