Convert All Top-Level Folders in Git Repository to Independent Repositories

Convert-TopToBranch.ps1

# This basically creates a fork-bomb where each forked process is splitting out one top-level folder

$MaxSimultaneousJobs = $(Get-WmiObject –class Win32_processor).NumberOfCores * .5
Write-Host "Processing up to $MaxSimultaneousJobs at a time"
Get-ChildItem -Directory | Foreach-Object {

    $FolderName = """$($_.Name)"""
    $BranchName = $_.Name -Replace(' ','-') 

    while (@(Get-Job -State Running).Count -ge $MaxSimultaneousJobs) {
        Write-Host "Waiting to process: $BranchName"
        Start-Sleep -Seconds 300
    }

    Write-Host "Beginning to process: $BranchName"
    $Command = "git subtree split -P $FolderName -b $BranchName"
    $scriptBlock = [Scriptblock]::Create($Command)
    Start-Job -InitializationScript ([scriptblock]::Create("Set-Location $PWD")) -Scriptblock $scriptBlock
}