Searches all file system drives for all Git repositories, and then lists them out

FindAllGitRepos.ps1

foreach ($DriveRoot in (Get-PSDrive | Where-Object {$_.Provider -like "*FileSystem"} | Select-Object -ExpandProperty Root)) {
    Set-Location $DriveRoot

    $FoundRepos = 
        Get-ChildItem ".git" -Directory -Force -Recurse -ErrorAction SilentlyContinue | 
            Select-Object @{Name = "Repository"; Expression = { $_.FullName.Substring(0, $_.FullName.IndexOf("\.git")) }}

    if ($FoundRepos -eq $null) {
        $RepoCount = 0
    }
    elseif ($FoundRepos -ne $null -and $FoundRepos.Count -eq $null) {
        $RepoCount = 1
    }
    else {
        $RepoCount = $FoundRepos.Count
    }

    "Found $RepoCount repository(ies) on $DriveRoot"

    if ($RepoCount -gt 0) {
        "========================"
        $FoundRepos | 
            Select-Object -ExpandProperty Repository
    }

    "`r`n"
}