delete_local_git_branches_not_on_origin

delete-git-branches.ps1

function Remove-DeletedGitBranches
{
    param
    (
        [Parameter()]
        [Switch]
        $Force
    )

    $null = (git fetch --all --prune);
    $branches = git branch -vv | Select-String -Pattern ": gone]" | ForEach-Object { $_.toString().Split(" ")[2] };
    if($Force)
    {
        $branches | ForEach-Object {git branch -D $_};
    }
    else 
    {        
        $branches | ForEach-Object {git branch -d $_};        
    }
}

Remove-DeletedGitBranches