How do I send ether from an EOA to a smart contract

Question

I am trying to write a simple smart contract that will share any ether it gets between two EOAs. I am unable to find the command I need to run from the geth console to send the ether "to the share function". What is the syntax for this command? 

pragma solidity ^0.4.0;
contract sharer {
    address owner;
    address A;
    address B;

    function sharer (address _A, address _B) public {
        A = _A;
        B = _B;
    }

    function share () payable public {
        A.transfer(msg.value/2);
        B.transfer(msg.value/2);
    }
}

Answer 1

You include ether to send in the transactionObject for the method call.

const txObject = {
  value: web3.toWei(amtInEther, 'ether')
};

shareContractInstance.share.sendTransaction(txObject);

The other options for the transaction object can be found here.