Little bash script you can pass args to and test cors headers with.

.profile

#same functionality in a bash profile function
function cors-test() {
    ORIGIN=$1
    URI=$2
    METHOD=$3

    if [ -z "$3" ] && [ -z "$METHOD" ]; then
        echo -e "\033[0;33mSince you did not provide a method, the default GET will be used.\nYou can provide a third param to specify the method\n(to use with the curl -X option).\033[1;33m\033[0m\n"
        METHOD="-X ${METHOD}"
    fi

    if [ -n "$ORIGIN" ] && [ -n "$URI" ]; then
        curl ${METHOD} -H "Origin: ${ORIGIN}" --verbose "${URI}"
    else
        echo -e "\033[1;31mWhoops!\n\nYou need to provide at least two parameters.\n\nFirst argument: The origin domain to mock a curl call from.\n\nSecond argument, the url to hit with this cURL call to test CORS rules.\033[1;31m\033[0m\n"
    fi
}

corsTest.sh

#!/bin/bash

ORIGIN=$1
URI=$2
METHOD=$3

if [ -z "$3" ] && [ -z "$METHOD" ]; then
    echo -e "\033[0;33mSince you did not provide a method, the default GET will be used.\nYou can provide a third param to specify the method\n(to use with the curl -X option).\033[1;33m\033[0m\n"
    METHOD="-X ${METHOD}"
fi

if [ -n "$ORIGIN" ] && [ -n "$URI" ]; then
    curl ${METHOD} -H "Origin: ${ORIGIN}" --verbose "${URI}"
else
    echo -e "\033[1;31mWhoops!\n\nYou need to provide at least two parameters.\n\nFirst argument: The origin domain to mock a curl call from.\n\nSecond argument, the url to hit with this cURL call to test CORS rules.\033[1;31m\033[0m\n"
fi