curl command line "post" code example

Example 1: curl post json

curl -X POST -H "Content-Type: application/json" \
 -d '{"username":"abc","password":"abc"}' \
 https://api.example.com/v2/login

Example 2: curl post

curl --data '' https://example.com/resource.cgi

curl -X POST https://example.com/resource.cgi

curl --request POST https://example.com/resource.cgi