Scripts/Uninstall-ObsoleteModule.ps1
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#Requires -Version 3.0 [CmdletBinding(SupportsShouldProcess)] Param( [String[]]$Name ) # Check required modules are present: # - PowerShellGet: Included with PowerShell 5.0+ otherwise must be installed $RequiredModules = @('PowerShellGet') foreach ($Module in $RequiredModules) { Write-Verbose -Message ('Checking module is available: {0}' -f $Module) if (!(Get-Module -Name $Module -ListAvailable)) { throw ('Required module not available: {0}' -f $Module) } } $GetParams = @{} if ($PSBoundParameters.ContainsKey('Name')) { $GetParams['Name'] = $Name } Write-Verbose -Message 'Retrieving installed modules ...' $InstalledModules = Get-InstalledModule -Verbose:$false @GetParams Write-Verbose -Message 'Retrieving available modules ...' $AvailableModules = Get-Module -ListAvailable -Verbose:$false @GetParams foreach ($Module in $InstalledModules) { # Try to avoid subsequent call to Get-InstalledModule as it's obscenely slow [PSModuleInfo[]]$MatchingModules = $AvailableModules | Where-Object Name -eq $Module.Name if ($MatchingModules.Count -eq 1) { continue } [PSCustomObject[]]$AllVersions = Get-InstalledModule -AllVersions -Name $Module.Name if ($AllVersions.Count -gt 1) { Write-Verbose -Message ('Uninstalling {0} version(s): {1}' -f $Module.Name, [String]::Join(', ', $AllVersions.Version -ne $Module.Version)) if ($PSCmdlet.ShouldProcess($Module.Name, 'Uninstall obsolete versions')) { $AllVersions | Where-Object Version -ne $Module.Version | Uninstall-Module } } } |