This is the best page I could find to help with this, I don't see what I want to do on there: http://wiki.bash-hackers.org/syntax/pe. But I think I've seen this done before.

Say I want to run the same query against Bing and Google (let's assume these would work):

curl -S "https://www.google.com?q=stackoverflow"

curl -S "https://www.bing.com?q=stackoverflow"

Could I run them both in one curl? Like curl -S "https://www.${'bing','google'}.com?q=stackoverflow"

I'd swear I've seen this done before. But I clearly have the syntax wrong. As well as the search terms.

2 Answers 2


Curl understand (and expand) braces:

curl -S 'https://www.{bing,google}.com?q=stackoverflow;'

From man curl:

You can specify multiple URLs … by writing part sets within braces as in:


This is different to shell brace expansions, Curl will not expand Nested braces like the following shell code example will:

$ echo {{1..3},{5..7}}
1 2 3 5 6 7
  • Was it the $ that as goofing me up?
    – jcollum
    Dec 19, 2016 at 20:53
  • curl -S "https://www.{bing,google}.com?q=stackoverflow;" is simpler and works, is it wrong?
    – jcollum
    Dec 19, 2016 at 20:54
  • You said it must be unquoted but you quoted it. Confusing.
    – jcollum
    Dec 19, 2016 at 20:56
  • curl -S "https://www.{bing,google}.com?q=stackoverflow;" does expand... I get 2 curls when I run that.
    – jcollum
    Dec 19, 2016 at 20:58
  • @jcollum Answer re-written. Yes, the $ seem to be the biggest problem you had.
    – user232326
    Dec 19, 2016 at 21:28

handled by shell as two url parameters:

curl -S https://www.{bing,google}.com\?q=stackoverflow

handled by internal curl syntax in single url param:

curl -S https://www.\{bing,google\}.com\?q=stackoverflow

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.