[nathos]

To be more accurate, your Mac isn't Linux, it's BSD. Luckily that *NIX underpinning is often enough to make it a solid development platform even when deploying to Linux.

[umanwizard]

It's not really BSD either; it's a mix of a bunch of stuff. The kernel XNU is a hybrid between Mach and BSD. I think there are also a few GNU utilities in the base system but I could be wrong about that (?)

[gpvos]

    $ uname
    Darwin
    $ /usr/bin/cmp --version
    cmp (GNU diffutils) 2.8.1
    [...]