Use a string instead of a file in this curl post command

Question

This request works fine on my Linux:

curl -F out=json -F "content=<FILE.html" http://validator.w3.org/nu/

Now I want to modify this curl command and use a string instead of a file. The raw html does not work because this sign "<" is interpreted as redirection by curl and also the sign "!" from

<!DOCTYPE html>

is interpreted by the shell.

I tried to use backslashes but it gets sent to the service endpoint too which does not help either.

Here is the content of FILE.html that I want to send as a string:

<!DOCTYPE html><html><head><title></title></head><body></body></html>

It might become relevant which OS you do this on

Marged
– Marged

2016-01-09 00:35:07 +00:00
Commented Jan 9, 2016 at 0:35 — Marged
– Marged, Commented Jan 9, 2016 at 0:35

Joachim Isaksson · Accepted Answer · 2016-01-09 00:50:19Z

2

You can use --form-string instead of -F to make the string literal (ie not parse the less than sign) and just quote the string with single quotes to make the bang lose its meaning to the shell;

curl -F out=json \
   --form-string 'content=<!DOCTYPE html><html><head><title></title></head><body></body></html>' \
   http://validator.w3.org/nu/

answered Jan 9, 2016 at 0:50

Joachim Isaksson

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