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How to remove old .NET Core SDKs?

See original GitHub issue

After installing .NET Core 2.1 SDK (great job, BTW), dotnet --info showed me I had all this installed:

.NET Core SDKs installed:
  2.1.4 [C:\Program Files\dotnet\sdk]
  2.1.100-preview-007328 [C:\Program Files\dotnet\sdk]
  2.1.100-preview-007341 [C:\Program Files\dotnet\sdk]
  2.1.100-preview-007354 [C:\Program Files\dotnet\sdk]
  2.1.100-preview-007363 [C:\Program Files\dotnet\sdk]
  2.1.100-preview-007391 [C:\Program Files\dotnet\sdk]
  2.1.100 [C:\Program Files\dotnet\sdk]
  2.1.101 [C:\Program Files\dotnet\sdk]
  2.1.102 [C:\Program Files\dotnet\sdk]
  2.1.103 [C:\Program Files\dotnet\sdk]
  2.1.104 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007480 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007509 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007513 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007517 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007570 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007576 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007587 [C:\Program Files\dotnet\sdk]
  2.1.200-preview-007589 [C:\Program Files\dotnet\sdk]
  2.1.200 [C:\Program Files\dotnet\sdk]
  2.1.201 [C:\Program Files\dotnet\sdk]
  2.1.300 [C:\Program Files\dotnet\sdk]

How do I remove the old cruft (especially the previews)?

Issue Analytics

State:
Created 5 years ago
Comments:17 (7 by maintainers)

Top GitHub Comments

46reactions

penguidcommented, May 23, 2019

And here is a script function that attempts to silently uninstall (except for UAC prompt) outdated SDKs, keeping only the latest patch version of each (unless using the -All param). Dry run with Uninstall-DotNetSdk -WhatIf or Uninstall-DotNetSdk -WhatIf -All.

function Uninstall-DotNetSdk {
  param (
    [parameter(Mandatory = $False)] [switch] $All,
    [parameter(Mandatory = $False)] [switch] $WhatIf
  )
  pushd $env:SystemRoot\System32
  Get-ChildItem HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall |
    Get-ItemProperty |
    Where-Object DisplayName -match "^Microsoft .NET Core SDK" |
    Where-Object BundleVersion -match "^\d+\.\d+\.\d+\d\d\.\d+$" |
    Group-Object { ([regex] "^(\d+\.\d+\.\d+)\d\d\.\d+$").Match($_.BundleVersion).Groups[1].Value } |
    Sort-Object { [regex]::Replace($_.Name, '\d+', { param($match) $match[0].Value.PadLeft(10,'0') }) } |
    ForEach-Object {
      $_.Group |
        Sort-Object {
          $versionMatch = ([regex] "^\d+\.\d+\.\d+(\d\d)\.(\d+)$").Match($_.BundleVersion)
          $v1 = $versionMatch.Groups[1].Value
          $v2 = $(if ($versionMatch.Groups[2].Value -eq "0") { "9".PadLeft(10,'9') } else { $versionMatch.Groups[2].Value.PadLeft(10,'0') })
          "$v1.$v2"
        } |
        Select-Object -SkipLast $(if ($All) { 0 } else { 1 }) |
        ForEach-Object {
          if ($_.QuietUninstallString -imatch '^"?([^"]+)"? +(/uninstall.*)$') {
            $file = $Matches[1]
            $arglist = $Matches[2]
            "Uninstall command: `"$file`" $arglist"
            if (-not $WhatIf) { Start-Process -FilePath $file -ArgumentList $arglist -Wait }
          }
        }
    }
  popd
}

19reactions

turowiczcommented, Oct 26, 2018

How do we do this for Mac or Linux?