sample script you can use in PowerShell to iterate over all Conda environments and check if Jupyter and PyTorch are installed:

check4jupy.ps1

$condaenvs = (conda env list | Out-String) -split "`n"
foreach ($condaenv in $condaenvs) {
    $name = $condaenv.Split(' ')[0]

    if ($name -ne "" -and $name -ne "#") {
        Write-Output "================================================================"
        Write-Output "Environment: $name"

        Write-Output "`nChecking for Jupyter:"
        & cmd /c "call activate $name && jupyter --version"

        Write-Output "`nChecking for Pytorch:"
        & cmd /c "call activate $name && python -c `"import torch; print(torch.__version__)`""

        Write-Output "================================================================"
    }
}