How do I pipe command output to curl

Question

I am using curl to post some urlencoded content to a URL, and I want the content of the curl command to come from a pipe. Basically...

... | curl -s --data-urlencode '{\"text\":\"$PIPE_RESULT\"}' http://...

I thought $0 might work, but I get a invalid_payload error with the simple text of:

echo "http://www.example.com" | curl -s --data-urlencode '{"text\":\"$0\"}' https:/...

Daniel Stenberg · Accepted Answer · 2017-03-08 22:56:50Z

5

xargs to the rescue!

echo "http://www.example.com" | \
xargs -I moo curl -s --data-urlencode '{"text\":\"moo\"}' https://example.com

The 'moo' string given to xargs means that it will replace 'moo' in the following string with the contents it read from stdin.

answered Mar 8, 2017 at 22:56

Daniel Stenberg

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