Macos get file path1/7/2024 ![]() If you absolutely need to know what operating system you’re on, the IsWindows, IsLinux, and IsMacOS variables work great. You should use these sparingly, and instead use capability checks (see above). PowerShell 6 introduces three global variables that you can use to check which platform you’re on. Use “IsWindows”, “IsLinux”, and “IsMacOS” Variables Sparingly When you check for functionality instead of versions, your code will work in more places. This is called a capability check and is the preferred pattern for supporting different ways of doing things across versions and operating systems. This property exists on the exception objects thrown by Windows PowerShell and PowerShell Core. Notice that instead of checking what version of PowerShell we’re on to know if the ErrorDetails contains the error’s response body, we instead check for the existence of the Response property on the thrown exception. For example, 'ParentPath' -f $uri,$errorDetails) If for some reason you can’t use Join-Path to create a path or our strategy above, instead of hard-coding the directory separator character, use the ::DirectorySeparatorChar property to get the correct separator for the current operating system. Use “::DirectorySeparatorChar” When You Can’t Use “Join-Path” This way we don’t have to use regular expressions. ![]() characters to the parent/current item name, respectively (line 8). The GetFullPath method on the IO.Path object replacing.Join-Path normalizing our directory separators (line 7) and.$archivePath = ::GetFullPath($archivePath) $archivePath = Join-Path -Path $archivePath -ChildPath '.' $archivePath = Join-Path -Path (Get-Location).Path -ChildPath $archivePath Here’s how we got our paths normalized: # If the user didn't give us an absolute path, Normally, we would use Resolve-Path to get the full path to the file, which normalizes the directory separator, but in this situation, the path may be to a file the user wants us to create and Resolve-Path requires that the path exists. In one situation, our module took in a path from the user via a configuration file. Returns /usr/bin/dotnet on Linux/MacOS and \usr\bin\dotnet on Windows. Not only does it use the correct directory separator, but it converts directory separators to the directory separator for the current platform.įor example, Join-Path -Path '\usr\bin' -ChildPath 'dotnet' That path won’t work on Linux or MacOS because their file systems see the \ character as an escape character, not a directory separator. Never, ever put paths together with strings, e.g. Always Use “Join-Path” to Create Path Strings When the Path Originates in Your Code Since environment variable names are case-insensitive on Windows, you should prefer the case from Linux/MacOS. Would return nothing on MacOS or Linux, because the path environment variable is PATH on those platforms. Use the Same Case When Reading/Setting Environment VariablesĮnvironment variable names are case-sensitive on MacOS and Linux, regardless of how you access them. ![]() The Environment class also has neat properties like Is64BitProcess, Is64BitOperatingSystem, and UserInteractive, which aren’t exposed in the env: drive. They return the correct values across operating systems. Instead of using environment variables like $env:USERNAME, use the static properties on the Environment class instead. Windows and MacOS both have variables for the temp directory, but they have different names. All of them have PATH, but not much else. Use “Environment” Class Properties Instead of “env:” DriveĮnvironment variables are different between the different operating systems. I learned a lot that I wanted to share with the community as cross-platform support becomes more and more important. I just spent a month updating one of our PowerShell modules to support Linux and MacOS.
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