Powershell embedded in .CMD File; automatic git commit - pull - push

Backup Notes.cmd

@@:: This prolog allows a PowerShell script to be embedded in a .CMD file.
@@:: Any non-PowerShell content must be preceeded by "@@"
@@setlocal
@@set POWERSHELL_BAT_ARGS=%*
@@if defined POWERSHELL_BAT_ARGS set POWERSHELL_BAT_ARGS=%POWERSHELL_BAT_ARGS:"=\"%
@@PowerShell -ExecutionPolicy Bypass -Command Invoke-Expression $('$args=@(^&{$args} %POWERSHELL_BAT_ARGS%);'+[String]::Join(';',$((Get-Content '%~f0') -notmatch '^^@@'))) & goto :EOF
Set-Location -Path "C:\Users\peter\Repositories\notes.git\"

$gstatus = git status --porcelain
$numberOfChanges = ($gstatus | Measure-Object).Count
$currentDateTime = Get-Date -Format "yyyy-MM-dd HH:mm"

if ($numberOfChanges -gt 0) {
    $commitMessage = "$currentDateTime - files changed: $numberOfChanges"

    git add --all
    git commit -m $commitMessage
    git pull
    git push
}

Read-Host -Prompt "Press Enter to exit"