Program a Arduino with Another Arduino without a USB Cable

Using Arduino Programming Questions
10

@westfw,
Does the target chip need to be on a board/breadboard with a crystal? Or can it be 'bare' on a breadboard with just the pins connected:
power, gnd, Master's D10 to Slave's Reset, D11-D11 (MOSI), D12-D12 (MISO), D13-D13 (SCK)?