An example template of how to build a powershell command line application

Cli-Example.psm1

<#
Description and useful info here
#>
function Cli-Example
{
    Param
    (
         [Parameter(Mandatory=$false, ParameterSetName='param1')]
         [bool] $param1,
         [Parameter(Mandatory=$false, ParameterSetName='param2')]
         [bool] $param2
    )

    switch($PsCmdlet.ParameterSetName){
    "param1" { param1 }
    "param2" { param2 }
    }
}

function param1 {
    if($param1){
        Write-Host "param1 true"
    }
    else{
        Write-Host "param1 false"
    }
}

function param2 {
    if($param2){
        Write-Host "param2 true"
    }
    else{
        Write-Host "param2 false"
    }
}

Export-ModuleMember -Function 'Cli-Example'