Check OS version using Swift on Mac OS X

Question

I'm building an application that needs to check what version of OS X is installed on a Mac. It is built against 10.9 Mavericks, but all of the Swift APIs are pretty much 10.10 only.

I'm trying to use the following, however it does not compile against the 10.9 SDK since it does not have these APIs, I know how to use if #available(OSX 10.10, *) to conditionally compile as per the different versions, however because NSProcessInfo is a 10.10+ API I can't use it to check to see if the Mac is running 10.9. This is the code I have so far (however it does not compile against the 10.9 SDK):

let osVersion = NSProcessInfo.processInfo().operatingSystemVersion
if osVersion.minorVersion == 9 {
    //  Do something for OS X 10.9 Mavericks
} else {
    // Do something for anything not Mavericks (10.10+)
}

Is there another way to check what OS the Mac is running in 10.9? Essentially I could wrap the above code with:

if #available(OSX 10.10, *) {
    let osVersion = NSProcessInfo.processInfo().operatingSystemVersion
    // Check OS version
} else {
    // Check OS version using a 10.9 API
}

I just don't know what to fill in for the // Check OS version using a 10.9 API section of that code block.

Possible duplicate of How do I determine the OS version at runtime in OS X or iOS (without using Gestalt)? — jtbandes
– jtbandes, Commented Apr 21, 2016 at 15:37
@jtbandes the answer in there uses an API that isn't in 10.9 it looks like — skylerl
– skylerl, Commented Apr 21, 2016 at 15:38

Ahmad Ishfaq · Accepted Answer · 2016-04-21 15:24:13Z

3

The same check will be used just put 10.9 code inside if for other version in else

if #available(OSX 10.9, *) {
 } else {
}

answered Apr 21, 2016 at 15:24

Ahmad Ishfaq

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1 Comment

skylerl Over a year ago

This only checks the minimum version, so regardless of what system I am running, it will always be true.

Andrew · Accepted Answer · 2022-12-15 14:37:14Z

1

2022, MacOS

let a = ProcessInfo.processInfo.operatingSystemVersion

let b = ProcessInfo.processInfo.operatingSystemVersionString

edited Dec 15, 2022 at 14:37

answered Dec 15, 2022 at 14:28

Andrew

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