Update external install scripts

externals/install-dotnet.ps1

@@ -46,6 +46,7 @@
     Possible values:
         - dotnet     - the Microsoft.NETCore.App shared runtime
         - aspnetcore - the Microsoft.AspNetCore.App shared runtime
+        - windowsdesktop - the Microsoft.WindowsDesktop.App shared runtime
 .PARAMETER DryRun
     If set it will not perform installation but instead display what command line to use to consistently install
     currently requested version of dotnet cli. In example if you specify version 'latest' it will display a link
@@ -83,7 +84,7 @@ param(
    [string]$Version="Latest",
    [string]$InstallDir="<auto>",
    [string]$Architecture="<auto>",
-   [ValidateSet("dotnet", "aspnetcore", IgnoreCase = $false)]
+   [ValidateSet("dotnet", "aspnetcore", "windowsdesktop", IgnoreCase = $false)]
    [string]$Runtime,
    [Obsolete("This parameter may be removed in a future version of this script. The recommended alternative is '-Runtime dotnet'.")]
    [switch]$SharedRuntime,
@@ -268,6 +269,10 @@ function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel, [bool]$Co
     elseif ($Runtime -eq "aspnetcore") {
         $VersionFileUrl = "$UncachedFeed/aspnetcore/Runtime/$Channel/latest.version"
     }
+    # Currently, the WindowsDesktop runtime is manufactured with the .Net core runtime
+    elseif ($Runtime -eq "windowsdesktop") {
+        $VersionFileUrl = "$UncachedFeed/Runtime/$Channel/latest.version"
+    }
     elseif (-not $Runtime) {
         if ($Coherent) {
             $VersionFileUrl = "$UncachedFeed/Sdk/$Channel/latest.coherent.version"
@@ -325,6 +330,9 @@ function Get-Download-Link([string]$AzureFeed, [string]$SpecificVersion, [string
     elseif ($Runtime -eq "aspnetcore") {
         $PayloadURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/aspnetcore-runtime-$SpecificVersion-win-$CLIArchitecture.zip"
     }
+    elseif ($Runtime -eq "windowsdesktop") {
+        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/windowsdesktop-runtime-$SpecificVersion-win-$CLIArchitecture.zip"
+    }
     elseif (-not $Runtime) {
         $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-sdk-$SpecificVersion-win-$CLIArchitecture.zip"
     }
@@ -564,6 +572,10 @@ elseif ($Runtime -eq "aspnetcore") {
     $assetName = "ASP.NET Core Runtime"
     $dotnetPackageRelativePath = "shared\Microsoft.AspNetCore.App"
 }
+elseif ($Runtime -eq "windowsdesktop") {
+    $assetName = ".NET Core Windows Desktop Runtime"
+    $dotnetPackageRelativePath = "shared\Microsoft.WindowsDesktop.App"
+}
 elseif (-not $Runtime) {
     $assetName = ".NET Core SDK"
     $dotnetPackageRelativePath = "sdk"

externals/install-dotnet.sh

@@ -148,7 +148,7 @@ get_linux_platform_name() {
             return 0
         elif [ -e /etc/redhat-release ]; then
             local redhatRelease=$(</etc/redhat-release)
-            if [[ $redhatRelease == "CentOS release 6."* || $redhatRelease == "Red Hat Enterprise Linux Server release 6."* ]]; then
+            if [[ $redhatRelease == "CentOS release 6."* || $redhatRelease == "Red Hat Enterprise Linux "*" release 6."* ]]; then
                 echo "rhel.6"
                 return 0
             fi
@@ -612,6 +612,9 @@ copy_files_or_dirs_from_list() {
         local target="$out_path/$path"
         if [ "$override" = true ] || (! ([ -d "$target" ] || [ -e "$target" ])); then
             mkdir -p "$out_path/$(dirname "$path")"
+            if [ -d "$target" ]; then
+                rm -rf "$target"
+            fi
             cp -R $override_switch "$root_path/$path" "$target"
         fi
     done
@@ -868,6 +871,9 @@ do
             runtime="$1"
             if [[ "$runtime" != "dotnet" ]] && [[ "$runtime" != "aspnetcore" ]]; then
                 say_err "Unsupported value for --runtime: '$1'. Valid values are 'dotnet' and 'aspnetcore'."
+                if [[ "$runtime" == "windowsdesktop" ]]; then
+                    say_err "WindowsDesktop archives are manufactured for Windows platforms only."
+                fi
                 exit 1
             fi
             ;;