PS7Bootstrap.ps1
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<#PSScriptInfo
.VERSION 1.0.0 .GUID 2d80b74b-905a-4d91-97af-35f0d3fe56e7 .AUTHOR Michael Niehaus .COMPANYNAME .COPYRIGHT .TAGS Windows .LICENSEURI https://github.com/mtniehaus/PS7Bootstrap/LICENSE .PROJECTURI https://github.com/mtniehaus/PS7Bootstrap .ICONURI .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES v1.0 - Initial version #> <# .SYNOPSIS This script will ensure that a current PowerShell 7 version is installed, and will re-run the script using that instead of PowerShell 5.1. .DESCRIPTION This script will ensure that a current PowerShell 7 version is installed, and will re-run the script using that instead of PowerShell 5.1. If the needed version of PowerShell 7 is not found, it will be installed using WinGet. To make sure that WinGet is up to date (and working), the Update-InboxApp script will ensure that the Desktop App Installer app (which contains WinGet) is also up to date. .EXAMPLE # Relaunch as PowerShell 7 if necessary if ($PSVersionTable.PSVersion.Major -ne 7) { Set-PSRepository -Name "PSGallery" -InstallationPolicy Trusted Install-Script PS7Bootstrap -Force -ErrorAction Ignore PS7Bootstrap.ps1 $PSCommandPath Exit $LASTEXITCODE } Write-Host "In PowerShell 7!" .NOTES See https://oofhours.com for more information. #> [CmdletBinding()] param( [Parameter(Mandatory = $False, Position = 0)] [String] $Script = "", [Parameter(Mandatory = $False)] [String] $MinimumVersion = "7.4.3" ) # Check the current installed PowerShell version if (Test-Path "HKLM:\Software\Microsoft\PowerShellCore\InstalledVersions") { $version = Get-ChildItem "HKLM:\Software\Microsoft\PowerShellCore\InstalledVersions" | Get-ItemPropertyValue -Name SemanticVersion | Measure-Object -Maximum $currentVersion = $version.Maximum Write-Host "Current PowerShell version = $currentVersion" } else { Write-Host "No PowerShell LTS version found." $currentVersion = "0.0.0" } Write-Host "Minimum PowerShell version = $MinimumVersion" # Install or upgrade as needed if ($currentVersion -lt $MinimumVersion) { Write-Host "Installing PowerShell LTS" Invoke-Expression "& { $(Invoke-RestMethod https://aka.ms/install-powershell.ps1) } -UseMSI" # Make sure we have the current path (including pwsh.exe). Note that this will drop any user path entries. $newPath = (Get-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\Session Manager\Environment" -Name PATH).Path $env:Path = $newPath } # If a script was specified, run it using the installed PowerShell LTS version from the path if ($Script -ne "") { Try { & pwsh.exe -File $Script } Catch { Throw "Failed to start $PSCOMMANDPATH" } } |