I'm working for a startup right now, using a Lenovo ThinkPad running Linux. Most developers who've worked here use Apple products running OSX.
Leaving aside the virtues of Linux vs. OSX as a development environment, I'd use this as a litmus test. If your request for a Linux box is refused, run for the hills. It's as bad a sign as being forced to wear a suit and tie.
Re. OSX vs. Linux: my opinion, having spent years using Windows, Linux (various flavours), OSX and a little FreeBSD: OSX is better than Windows for software development, but that's as far as it goes. It's still a locked-down proprietary imponator that you'd do well to avoid.
Leaving aside the virtues of Linux vs. OSX as a development environment, I'd use this as a litmus test. If your request for a Linux box is refused, run for the hills. It's as bad a sign as being forced to wear a suit and tie.
Re. OSX vs. Linux: my opinion, having spent years using Windows, Linux (various flavours), OSX and a little FreeBSD: OSX is better than Windows for software development, but that's as far as it goes. It's still a locked-down proprietary imponator that you'd do well to avoid.