Just use the -H parameter several times:
curl -H “Accept-Charset: utf-8” -H “Content-Type: application/x-www-form-urlencoded” http://www.some-domain.com
To pass multiple headers in a curl request you simply add additional -H or –header to your curl command.
Example
//Simplified
$ curl -v -H ‘header1:val’ -H ‘header2:val’ URL
//Explanatory
$ curl -v -H ‘Connection: keep-alive’ -H ‘Content-Type: application/json’ https://www.example.com
Going Further
For standard HTTP header fields such as User-Agent, Cookie, Host, there is actually another way to setting them. The curl command offers designated options for setting these header fields:
-A (or –user-agent): set “User-Agent” field.
-b (or –cookie): set “Cookie” field.
-e (or –referer): set “Referer” field.
-H (or –header): set “Header” field
For example, the following two commands are equivalent. Both of them change “User-Agent” string in the HTTP header.
$ curl -v -H “Content-Type: application/json” -H “User-Agent: UserAgentString” https://www.example.com
$ curl -v -H “Content-Type: application/json” -A “UserAgentString” https://www.example.com