Assuming you mean the SUS, I'd argue there's a big difference between "meets the standard" and "feels like an actual unix". Personally, I'd call OS X unix-like

Assuming you mean the SUS, I'd argue there's a big difference between "meets the standard" and "feels like an actual unix". Personally, I'd call OS X unix-like but not unix-alike, which perhaps sounds like hair splitting but having admined multiple unices there's definitely a difference, even if I can't figure out how exactly to articulate it beyond "it doesn't feel the same".