diff --git a/.github/actions/test/linux-packaging/action.yml b/.github/actions/test/linux-packaging/action.yml
new file mode 100644
index 00000000000..61d23742056
--- /dev/null
+++ b/.github/actions/test/linux-packaging/action.yml
@@ -0,0 +1,95 @@
+name: linux_packaging
+description: 'Test very basic Linux packaging'
+
+# This isn't working yet
+# It fails with
+
+# ERROR:  While executing gem ... (Gem::FilePermissionError)
+# You don't have write permissions for the /var/lib/gems/2.7.0 directory.
+#   WARNING: Installation of gem dotenv 2.8.1 failed! Must resolve manually.
+
+runs:
+  using: composite
+  steps:
+  - name: Capture Environment
+    if: success() || failure()
+    run: 'Get-ChildItem -Path env: | Out-String -width 9999 -Stream | write-Verbose -Verbose'
+    shell: pwsh
+  - name: Download Build Artifacts
+    uses: actions/download-artifact@v4
+    with:
+      path: "${{ github.workspace }}"
+  - name: Capture Artifacts Directory
+    continue-on-error: true
+    run: Get-ChildItem "${{ github.workspace }}/build/*" -Recurse
+    shell: pwsh
+
+  - name: Bootstrap
+    run: |-
+      Import-Module ./build.psm1
+      Start-PSBootstrap -Package
+    shell: pwsh
+  - name: Capture Artifacts Directory
+    continue-on-error: true
+    run: Import-Module ./build.psm1
+    shell: pwsh
+  - name: Extract Files
+    uses: actions/github-script@v7.0.0
+    env:
+      DESTINATION_FOLDER: "${{ github.workspace }}/bins"
+      ARCHIVE_FILE_PATTERNS: "${{ github.workspace }}/build/build.zip"
+    with:
+      script: |-
+        const fs = require('fs').promises
+        const path = require('path')
+        const target = path.resolve(process.env.DESTINATION_FOLDER)
+        const patterns = process.env.ARCHIVE_FILE_PATTERNS
+        const globber = await glob.create(patterns)
+        await io.mkdirP(path.dirname(target))
+        for await (const file of globber.globGenerator()) {
+          if ((await fs.lstat(file)).isDirectory()) continue
+          await exec.exec(`7z x ${file} -o${target} -aoa`)
+        }
+  - name: Fix permissions
+    continue-on-error: true
+    run: |-
+      find "${{ github.workspace }}/bins" -type d -exec chmod +rwx {} \;
+      find "${{ github.workspace }}/bins" -type f -exec chmod +rw {} \;
+    shell: bash
+  - name: Capture Extracted Build ZIP
+    continue-on-error: true
+    run: Get-ChildItem "${{ github.workspace }}/bins/*" -Recurse -ErrorAction SilentlyContinue
+    shell: pwsh
+  - name: Packaging Tests
+    if: success()
+    run: |-
+      Import-Module ./tools/ci.psm1
+      Restore-PSOptions -PSOptionsPath '${{ github.workspace }}/build/psoptions.json'
+      $options = (Get-PSOptions)
+      $rootPath = '${{ github.workspace }}/bins'
+      $originalRootPath = Split-Path -path $options.Output
+      $path = Join-Path -path $rootPath -ChildPath (split-path -leaf -path $originalRootPath)
+      $pwshPath = Join-Path -path $path -ChildPath 'pwsh'
+      chmod a+x $pwshPath
+      $options.Output = $pwshPath
+      Set-PSOptions $options
+      Invoke-CIFinish
+    shell: pwsh
+  - name: Upload packages
+    run: |-
+      Get-ChildItem "${env:BUILD_ARTIFACTSTAGINGDIRECTORY}/*.deb" -Recurse | ForEach-Object {
+        $packagePath = $_.FullName
+        Write-Host "Uploading $packagePath"
+        Write-Host "##vso[artifact.upload containerfolder=deb;artifactname=deb]$packagePath"
+      }
+      Get-ChildItem "${env:BUILD_ARTIFACTSTAGINGDIRECTORY}/*.rpm" -Recurse | ForEach-Object {
+        $packagePath = $_.FullName
+        Write-Host "Uploading $packagePath"
+        Write-Host "##vso[artifact.upload containerfolder=rpm;artifactname=rpm]$packagePath"
+      }
+      Get-ChildItem "${env:BUILD_ARTIFACTSTAGINGDIRECTORY}/*.tar.gz" -Recurse | ForEach-Object {
+        $packagePath = $_.FullName
+        Write-Host "Uploading $packagePath"
+        Write-Host "##vso[artifact.upload containerfolder=rpm;artifactname=rpm]$packagePath"
+      }
+    shell: pwsh
diff --git a/.github/actions/test/nix/action.yml b/.github/actions/test/nix/action.yml
new file mode 100644
index 00000000000..97575b6b54d
--- /dev/null
+++ b/.github/actions/test/nix/action.yml
@@ -0,0 +1,91 @@
+name: nix_test
+description: 'Test PowerShell on non-Windows platforms'
+
+inputs:
+  purpose:
+    required: false
+    default: ''
+    type: string
+  tagSet:
+    required: false
+    default: CI
+    type: string
+  ctrfFolder:
+    required: false
+    default: ctrf
+    type: string
+
+runs:
+  using: composite
+  steps:
+  - name: Capture Environment
+    if: success() || failure()
+    run: 'Get-ChildItem -Path env: | Out-String -width 9999 -Stream | write-Verbose -Verbose'
+    shell: pwsh
+  - name: Download Build Artifacts
+    uses: actions/download-artifact@v4
+    with:
+      path: "${{ github.workspace }}"
+  - name: Capture Artifacts Directory
+    continue-on-error: true
+    run: Get-ChildItem "${{ github.workspace }}/build/*" -Recurse
+    shell: pwsh
+
+  - name: Bootstrap
+    shell: pwsh
+    run: |-
+      Import-Module ./tools/ci.psm1
+      Invoke-CIInstall -SkipUser
+
+  - name: Extract Files
+    uses: actions/github-script@v7.0.0
+    env:
+      DESTINATION_FOLDER: "${{ github.workspace }}/bins"
+      ARCHIVE_FILE_PATTERNS: "${{ github.workspace }}/build/build.zip"
+    with:
+      script: |-
+        const fs = require('fs').promises
+        const path = require('path')
+        const target = path.resolve(process.env.DESTINATION_FOLDER)
+        const patterns = process.env.ARCHIVE_FILE_PATTERNS
+        const globber = await glob.create(patterns)
+        await io.mkdirP(path.dirname(target))
+        for await (const file of globber.globGenerator()) {
+          if ((await fs.lstat(file)).isDirectory()) continue
+          await exec.exec(`7z x ${file} -o${target} -aoa`)
+        }
+
+  - name: Fix permissions
+    continue-on-error: true
+    run: |-
+      find "${{ github.workspace }}/bins" -type d -exec chmod +rwx {} \;
+      find "${{ github.workspace }}/bins" -type f -exec chmod +rw {} \;
+    shell: bash
+
+  - name: Capture Extracted Build ZIP
+    continue-on-error: true
+    run: Get-ChildItem "${{ github.workspace }}/bins/*" -Recurse -ErrorAction SilentlyContinue
+    shell: pwsh
+
+  - name: Test
+    if: success()
+    run: |-
+      Import-Module ./tools/ci.psm1
+      Restore-PSOptions -PSOptionsPath '${{ github.workspace }}/build/psoptions.json'
+      $options = (Get-PSOptions)
+      $rootPath = '${{ github.workspace }}/bins'
+      $originalRootPath = Split-Path -path $options.Output
+      $path = Join-Path -path $rootPath -ChildPath (split-path -leaf -path $originalRootPath)
+      $pwshPath = Join-Path -path $path -ChildPath 'pwsh'
+      chmod a+x $pwshPath
+      $options.Output = $pwshPath
+      Set-PSOptions $options
+      Invoke-CITest -Purpose '${{ inputs.purpose }}' -TagSet '${{ inputs.tagSet }}' -TitlePrefix '${{ inputs.buildName }}' -OutputFormat JUnitXml
+    shell: pwsh
+
+  - name: Convert, Publish, and Upload Pester Test Results
+    uses: "./.github/actions/test/process-pester-results"
+    with:
+      name: "${{ inputs.purpose }}-${{ inputs.tagSet }}"
+      testResultsFolder: "${{ runner.workspace }}/testResults"
+      ctrfFolder: "${{ inputs.ctrfFolder }}"
diff --git a/.github/actions/test/process-pester-results/action.yml b/.github/actions/test/process-pester-results/action.yml
new file mode 100644
index 00000000000..758bbdfc353
--- /dev/null
+++ b/.github/actions/test/process-pester-results/action.yml
@@ -0,0 +1,64 @@
+name: process-pester-test-results
+description: 'Process Pester test results'
+
+inputs:
+  name:
+    required: true
+    default: ''
+    type: string
+  testResultsFolder:
+    required: false
+    default: "${{ runner.workspace }}/testResults"
+    type: string
+  ctrfFolder:
+    required: false
+    default: ctrf
+    type: string
+
+runs:
+  using: composite
+  steps:
+  - name: Convert JUnit to CTRF
+    run: |-
+      Get-ChildItem -Path "${{ inputs.testResultsFolder }}/*.xml" -Recurse | ForEach-Object {
+        npx --yes junit-to-ctrf $_.FullName --output ./${{ inputs.ctrfFolder }}/$($_.BaseName).json --tool Pester
+      }
+    shell: pwsh
+
+  # this task only takes / as directory separators
+  - name: Publish Test Report
+    uses: ctrf-io/github-test-reporter@v1
+    with:
+      report-path: './${{ inputs.ctrfFolder }}/*.json'
+      exit-on-fail: true
+      summary-report: true
+      test-report: false
+      test-list-report: false
+      failed-report: false
+      fail-rate-report: false
+      flaky-report: false
+      flaky-rate-report: false
+      failed-folded-report: true
+      previous-results-report: false
+      ai-report: true
+      skipped-report: false
+      suite-folded-report: false
+      suite-list-report: false
+      pull-request-report: false
+      commit-report: false
+      custom-report: false
+    if: always()
+
+  - name: Upload testResults artifact
+    if: always()
+    uses: actions/upload-artifact@v4
+    with:
+      name: junit-pester-${{ inputs.name }}
+      path: ${{ runner.workspace }}/testResults
+
+  - name: Upload ctrf artifact
+    if: always()
+    uses: actions/upload-artifact@v4
+    with:
+      name: ctrf-pester-${{ inputs.name }}
+      path: ${{ inputs.ctrfFolder }}
diff --git a/.github/actions/test/windows/action.yml b/.github/actions/test/windows/action.yml
index 6cb5cbc1d74..c8e1c86024a 100644
--- a/.github/actions/test/windows/action.yml
+++ b/.github/actions/test/windows/action.yml
@@ -60,48 +60,9 @@ runs:
       Invoke-CITest -Purpose '${{ inputs.purpose }}' -TagSet '${{ inputs.tagSet }}' -OutputFormat JUnitXml
     shell: pwsh
 
-  - name: Convert JUnit to CTRF
-    run: |-
-      Get-ChildItem -Path "${{ runner.workspace }}/testResults/*.xml" -Recurse | ForEach-Object {
-        npx --yes junit-to-ctrf $_.FullName --output .\${{ inputs.ctrfFolder }}\$($_.BaseName).json --tool Pester --env 'Windows ${{ inputs.purpose }} ${{ inputs.tagSet }}'
-      }
-    shell: powershell
-
-  # this task only takes / as directory separators
-  - name: Publish Test Report
-    uses: ctrf-io/github-test-reporter@v1
-    with:
-      report-path: './${{ inputs.ctrfFolder }}/*.json'
-      exit-on-fail: true
-      summary-report: true
-      test-report: false
-      test-list-report: false
-      failed-report: false
-      fail-rate-report: false
-      flaky-report: false
-      flaky-rate-report: false
-      failed-folded-report: true
-      previous-results-report: false
-      ai-report: true
-      skipped-report: false
-      suite-folded-report: false
-      suite-list-report: false
-      pull-request-report: false
-      commit-report: false
-      custom-report: false
-
-    if: always()
-
-  - name: Upload testResults artifact
-    if: always()
-    uses: actions/upload-artifact@v4
-    with:
-      name: junit-pester-${{ inputs.purpose }}-${{ inputs.tagSet }}
-      path: ${{ runner.workspace }}\testResults
-
-  - name: Upload ctrf artifact
-    if: always()
-    uses: actions/upload-artifact@v4
+  - name: Convert, Publish, and Upload Pester Test Results
+    uses: "./.github/actions/test/process-pester-results"
     with:
-      name: ctrf-pester-${{ inputs.purpose }}-${{ inputs.tagSet }}
-      path: ${{ inputs.ctrfFolder }}
+      name: "${{ inputs.purpose }}-${{ inputs.tagSet }}"
+      testResultsFolder: ${{ runner.workspace }}\testResults
+      ctrfFolder: "${{ inputs.ctrfFolder }}"
diff --git a/.github/workflows/linux-ci.yml b/.github/workflows/linux-ci.yml
new file mode 100644
index 00000000000..0709bee66c2
--- /dev/null
+++ b/.github/workflows/linux-ci.yml
@@ -0,0 +1,141 @@
+name: Linux-CI
+
+run-name: "${{ github.ref_name }} - ${{ github.run_number }}"
+
+on:
+  workflow_dispatch:
+
+  push:
+    branches:
+      - master
+      - release*
+      - feature*
+    paths:
+      - "**"
+      - "!.github/ISSUE_TEMPLATE/**"
+      - "!.dependabot/config.yml"
+      - "!.pipelines/**"
+      - "!test/perf/**"
+  pull_request:
+    branches:
+      - master
+      - release*
+      - feature*
+    paths:
+      - ".github/actions/**"
+      - ".github/workflows/linux-ci.yml"
+      - "**.props"
+      - build.psm1
+      - src/**
+      - test/**
+      - tools/buildCommon/**
+      - tools/ci.psm1
+      - tools/WindowsCI.psm1
+      - "!test/common/markdown/**"
+      - "!test/perf/**"
+env:
+  DOTNET_CLI_TELEMETRY_OPTOUT: 1
+  DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+  FORCE_FEATURE: 'False'
+  FORCE_PACKAGE: 'False'
+  NUGET_KEY: none
+  POWERSHELL_TELEMETRY_OPTOUT: 1
+  __SuppressAnsiEscapeSequences: 1
+  nugetMultiFeedWarnLevel: none
+  system_debug: 'false'
+jobs:
+  ci_build:
+    name: Build PowerShell
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4.1.0
+        with:
+          fetch-depth: 1000
+      - name: Build
+        uses: "./.github/actions/build/ci"
+  linux_test_unelevated_ci:
+    name: Linux Unelevated CI
+    needs: ci_build
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4.1.0
+        with:
+          fetch-depth: 1000
+      - name: Linux Unelevated CI
+        uses: "./.github/actions/test/nix"
+        with:
+          purpose: UnelevatedPesterTests
+          tagSet: CI
+  linux_test_elevated_ci:
+    name: Linux Elevated CI
+    needs: ci_build
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4.1.0
+        with:
+          fetch-depth: 1000
+      - name: Linux Elevated CI
+        uses: "./.github/actions/test/nix"
+        with:
+          purpose: ElevatedPesterTests
+          tagSet: CI
+  linux_test_unelevated_others:
+    name: Linux Unelevated Others
+    needs: ci_build
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4.1.0
+        with:
+          fetch-depth: 1000
+      - name: Linux Unelevated Others
+        uses: "./.github/actions/test/nix"
+        with:
+          purpose: UnelevatedPesterTests
+          tagSet: Others
+  linux_test_elevated_others:
+    name: Linux Elevated Others
+    needs: ci_build
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4.1.0
+        with:
+          fetch-depth: 1000
+      - name: Linux Elevated Others
+        uses: "./.github/actions/test/nix"
+        with:
+          purpose: ElevatedPesterTests
+          tagSet: Others
+  verify_xunit:
+    name: Verify xUnit test results
+    needs: ci_build
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4.1.0
+        with:
+          fetch-depth: 1000
+      - name: Verify xUnit test results
+        uses: "./.github/actions/test/verify_xunit"
+
+  # TODO: Enable this when we have a Linux packaging workflow
+
+  # ERROR:  While executing gem ... (Gem::FilePermissionError)
+  # You don't have write permissions for the /var/lib/gems/2.7.0 directory.
+  #   WARNING: Installation of gem dotenv 2.8.1 failed! Must resolve manually.
+
+  # linux_packaging:
+  #   name: Attempt Linux Packaging
+  #   needs: ci_build
+  #   runs-on: ubuntu-20.04
+  #   steps:
+  #     - name: checkout
+  #       uses: actions/checkout@v4.1.0
+  #       with:
+  #         fetch-depth: 1000
+  #     - name: Verify xUnit test results
+  #       uses: "./.github/actions/test/linux-packaging"
diff --git a/.github/workflows/windows-ci.yml b/.github/workflows/windows-ci.yml
index e82d881686e..718cd6ccf2b 100644
--- a/.github/workflows/windows-ci.yml
+++ b/.github/workflows/windows-ci.yml
@@ -7,30 +7,29 @@ on:
       - release*
       - feature*
     paths:
-      - "*"
+      - "**"
       - "!.vsts-ci/misc-analysis.yml"
-      - "!.github/ISSUE_TEMPLATE/*"
-      - "!.github/workflows/*"
+      - "!.github/ISSUE_TEMPLATE/**"
       - "!.dependabot/config.yml"
-      - "!test/perf/*"
-      - "!.pipelines/*"
+      - "!test/perf/**"
+      - "!.pipelines/**"
   pull_request:
     branches:
       - master
       - release*
       - feature*
     paths:
-      - ".vsts-ci/templates/*"
-      - ".vsts-ci/windows.yml"
-      - "*.props"
+      - ".github/actions/**"
+      - ".github/workflows/windows-ci.yml"
+      - "**.props"
       - build.psm1
-      - src/*
-      - test/*
-      - tools/buildCommon/*
+      - src/**
+      - test/**
+      - tools/buildCommon/**
       - tools/ci.psm1
       - tools/WindowsCI.psm1
-      - "!test/common/markdown/*"
-      - "!test/perf/*"
+      - "!test/common/markdown/**"
+      - "!test/perf/**"
 permissions:
   contents: read
 
diff --git a/tools/ci.psm1 b/tools/ci.psm1
index 7dda90f14f3..f09d159b4c8 100644
--- a/tools/ci.psm1
+++ b/tools/ci.psm1
@@ -259,7 +259,7 @@ function Invoke-CITest
 
     if($IsLinux -or $IsMacOS)
     {
-        return Invoke-LinuxTestsCore -Purpose $Purpose -ExcludeTag $ExcludeTag -TagSet $TagSet -TitlePrefix $TitlePrefix
+        return Invoke-LinuxTestsCore -Purpose $Purpose -ExcludeTag $ExcludeTag -TagSet $TagSet -TitlePrefix $TitlePrefix -OutputFormat $OutputFormat
     }
 
     # CoreCLR
@@ -384,7 +384,8 @@ function Invoke-CITest
             }
 
             Write-Verbose -Verbose "Starting Pester with output format $($arguments.OutputFormat)"
-            Start-PSPester @arguments -Title $title
+            # We just built the test tools, we don't need to rebuild them
+            Start-PSPester @arguments -Title $title -SkipTestToolBuild
 
             # Fail the build, if tests failed
             Test-PSPesterResults -TestResultsFile $expFeatureTestResultFile
@@ -702,7 +703,8 @@ function Invoke-LinuxTestsCore
         [string] $Purpose = 'All',
         [string[]] $ExcludeTag = @('Slow', 'Feature', 'Scenario'),
         [string] $TagSet = 'CI',
-        [string] $TitlePrefix
+        [string] $TitlePrefix,
+        [string] $OutputFormat = "NUnitXml"
     )
 
     $output = Split-Path -Parent (Get-PSOutput -Options (Get-PSOptions))
@@ -715,12 +717,13 @@ function Invoke-LinuxTestsCore
     $sudoResultsWithExpFeatures = $null
 
     $noSudoPesterParam = @{
-        'BinDir'     = $output
-        'PassThru'   = $true
-        'Terse'      = $true
-        'Tag'        = @()
-        'ExcludeTag' = $testExcludeTag
-        'OutputFile' = $testResultsNoSudo
+        'BinDir'       = $output
+        'PassThru'     = $true
+        'Terse'        = $true
+        'Tag'          = @()
+        'ExcludeTag'   = $testExcludeTag
+        'OutputFile'   = $testResultsNoSudo
+        'OutputFormat' = $OutputFormat
     }
 
     # Get the experimental feature names and the tests associated with them
@@ -758,7 +761,7 @@ function Invoke-LinuxTestsCore
             if ($TitlePrefix) {
                 $title = "$TitlePrefix - $title"
             }
-            $passThruResult = Start-PSPester @noSudoPesterParam -Title $title
+            $passThruResult = Start-PSPester @noSudoPesterParam -Title $title -SkipTestToolBuild
 
             $noSudoResultsWithExpFeatures += $passThruResult
         }
@@ -773,6 +776,7 @@ function Invoke-LinuxTestsCore
         $sudoPesterParam['ExcludeTag'] = $ExcludeTag
         $sudoPesterParam['Sudo'] = $true
         $sudoPesterParam['OutputFile'] = $testResultsSudo
+        $sudoPesterParam['OutputFormat'] = $OutputFormat
 
         $title = "Pester Sudo - $TagSet"
         if ($TitlePrefix) {
@@ -805,7 +809,9 @@ function Invoke-LinuxTestsCore
             if ($TitlePrefix) {
                 $title = "$TitlePrefix - $title"
             }
-            $passThruResult = Start-PSPester @sudoPesterParam -Title $title
+
+            # We just built the test tools for the main test run, we don't need to rebuild them
+            $passThruResult = Start-PSPester @sudoPesterParam -Title $title -SkipTestToolBuild
 
             $sudoResultsWithExpFeatures += $passThruResult
         }