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+--- Thread: Determine Operating System in .NET Core (/Thread-Determine-Operating-System-in-NET-Core)
Determine Operating System in .NET Core - bontequaggaabcpiqniz - 07-24-2023
How can I determine which operating system my .NET Core app is running on?
In the past I could use `Environment.OSVersion`.
What is the current way to determine whether my app is running on Mac or Windows?
RE: Determine Operating System in .NET Core - contestless945911 - 07-24-2023
`System.Environment.OSVersion.Platform` can be used in full .NET Framework and Mono but:
- Mac OS X detection almost never worked for me under Mono
- it is not implemented in .NET Core
`System.Runtime.InteropServices.RuntimeInformation` can be used in .NET Core but:
- it is not implemented in full .NET Framework and Mono
- it does not perform platform detection in runtime but **uses hardcoded information instead**
(see [corefx issue #3032](
[To see links please register here]
) for more details)You could pinvoke platform specific unmanaged functions such as `uname()` but:
- it may cause segmentation fault on unknown platforms
- is not allowed in some projects
So my suggested solution (see code bellow) may look sily at first but:
- it uses 100% managed code
- it works in .NET, Mono and .NET Core
- it works like a charm so far in [Pkcs11Interop](
[To see links please register here]
) library<!-- language: lang-cs -->
string windir = Environment.GetEnvironmentVariable("windir");
if (!string.IsNullOrEmpty(windir) && windir.Contains(@"\") && Directory.Exists(windir))
{
_isWindows = true;
}
else if (File.Exists(@"/proc/sys/kernel/ostype"))
{
string osType = File.ReadAllText(@"/proc/sys/kernel/ostype");
if (osType.StartsWith("Linux", StringComparison.OrdinalIgnoreCase))
{
// Note: Android gets here too
_isLinux = true;
}
else
{
throw new UnsupportedPlatformException(osType);
}
}
else if (File.Exists(@"/System/Library/CoreServices/SystemVersion.plist"))
{
// Note: iOS gets here too
_isMacOsX = true;
}
else
{
throw new UnsupportedPlatformException();
}
RE: Determine Operating System in .NET Core - stadtholder707 - 07-24-2023
## Method
System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform()
## Possible Argument
OSPlatform.Windows
OSPlatform.OSX
OSPlatform.Linux
## Example
bool isWindows = System.Runtime.InteropServices.RuntimeInformation
.IsOSPlatform(OSPlatform.Windows);
## Update
Thanks to the comment by Oleksii Vynnychenko
You can get the operating systems name and version as a string using
var osNameAndVersion = System.Runtime.InteropServices.RuntimeInformation.OSDescription;
E.g. `osNameAndVersion` would be `Microsoft Windows 10.0.10586`
RE: Determine Operating System in .NET Core - phlebotomeokdkp - 07-24-2023
Check `System.OperatingSystem` class it has static methods for each OS i.e. `IsMacOS()`, `IsWindows()`, `IsIOS()` and so on. These methods are available starting with .NET 5.
This makes it a great choice because the implementations for these methods use preprocessor directives to fix the return value to a constant true/false at compilation time for each target OS the `OperatingSystem` class is compiled for. There is no runtime probing or calls to make.
Here is an excerpt from one such method in `OperatingSystem`:
```c#
/// <summary>
/// Indicates whether the current application is running on Linux.
/// </summary>
[NonVersionable]
public static bool IsLinux() =>
#if TARGET_LINUX && !TARGET_ANDROID
true;
#else
false;
#endif