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PowerShell/Scripts/clean-repos.ps1

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<#
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.SYNOPSIS
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Cleans all Git repositories in a folder from untracked files
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.DESCRIPTION
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This PowerShell script cleans all Git repositories in a folder from untracked files (including submodules).
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.PARAMETER ParentDir
Specifies the path to the parent folder
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.EXAMPLE
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PS> ./clean-repos C:\MyRepos
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.LINK
https://github.com/fleschutz/PowerShell
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.NOTES
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Author: Markus Fleschutz | License: CC0
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#>
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param([string]$ParentDir = "$PWD")
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try {
$StopWatch = [system.diagnostics.stopwatch]::startNew()
Write-Host "⏳ (1) Searching for Git executable... " -noNewline
& git --version
if ($lastExitCode -ne "0") { throw "Can't execute 'git' - make sure Git is installed and available" }
$ParentDirName = (Get-Item "$ParentDir").Name
Write-Host "⏳ (2) Checking parent folder 📂$ParentDirName... " -noNewline
if (-not(Test-Path "$ParentDir" -pathType container)) { throw "Can't access folder: $ParentDir" }
$Folders = (Get-ChildItem "$ParentDir" -attributes Directory)
$NumFolders = $Folders.Count
Write-Host "$NumFolders subfolders found"
[int]$Step = 2
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foreach ($Folder in $Folders) {
$FolderName = (Get-Item "$Folder").Name
$Step++
"⏳ ($Step/$($NumFolders + 2)) Cleaning 📂$FolderName..."
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& git -C "$Folder" clean -xfd -f # force + recurse into dirs + don't use the standard ignore rules
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if ($lastExitCode -ne "0") { throw "'git clean -xfd -f' failed with exit code $lastExitCode" }
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& git -C "$Folder" submodule foreach --recursive git clean -xfd -f
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if ($lastExitCode -ne "0") { throw "'git clean -xfd -f' in submodules failed with exit code $lastExitCode" }
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}
[int]$Elapsed = $StopWatch.Elapsed.TotalSeconds
"✔️ cleaned $NumFolders Git repositories at 📂$ParentDirName in $Elapsed sec."
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exit 0 # success
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} catch {
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"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
}