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

527

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

11,492

44
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
3

Note that you can't do curl -o /dev/null; it will throw a write error. – Keith Tyler Feb 10 '17 at 22:12
1

But you can do curl ... 2>/dev/null to redirect stderr only. – Jesse Chisholm Sep 14 '17 at 20:23
3

@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
1

that in my opinion means wget should be used instead of curl for downloading files. – Vishrant Jan 18 '19 at 21:35

score 144 · Answer 2 · answered May 03 '17 at 05:46

144

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

1,913

20

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

2

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

333,661

answered Oct 02 '20 at 20:13

Miguel Mota

244

Hide curl output

3 Answers3