curl headers
# -i to include response headers in the output.
# -H to specify a header
# -X to specify the request method
curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X GET http://hostname/resourcecurl headers
# -i to include response headers in the output.
# -H to specify a header
# -X to specify the request method
curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X GET http://hostname/resourcecurl check response headers
Just use '-ISs' flag options I:(only headers), sS:(silence and no errors) 
curl www.example -ISsCopyright © 2021 Codeinu
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