Get OSX version with objective-c

Question

How would I be able to get the OSX version in objective-c? I would like to avoid using shell commands. E.g "10.5" or "10.4"

Answer 1

NSProcessInfo *pInfo = [NSProcessInfo processInfo];
NSString *version = [pInfo operatingSystemVersionString];

Sorry for the formatting, I'm using my iPad to answer this.

Answer 2

As of 10.10 you can use NSProcessInfo.processInfo.operatingSystemVersion to get a NSOperatingSystemVersion struct.

typedef struct {
    NSInteger majorVersion;
    NSInteger minorVersion;
    NSInteger patchVersion;
} NSOperatingSystemVersion;

There's also a helpful isOperatingSystemAtLeastVersion: method.

NSOperatingSystemVersion minimumSupportedOSVersion = { .majorVersion = 10, .minorVersion = 12, .patchVersion = 0 };
BOOL isSupported = [NSProcessInfo.processInfo isOperatingSystemAtLeastVersion:minimumSupportedOSVersion];