param_test.ps1

[CmdletBinding(DefaultParameterSetName="base")]
Param(
    # things to back up
    [Parameter(Mandatory=$true,ParameterSetName="base")]
    [Parameter(Mandatory=$true,ParameterSetName="mailTo")]
    [string] $include,

    # disk or network path to backup to
    [Parameter(Mandatory=$true,ParameterSetName="base")]
    [Parameter(Mandatory=$true,ParameterSetName="mailTo")]
    [string] $backupTo,

    # directory to put log files in
    [Parameter(Mandatory=$true,ParameterSetName="base")]
    [Parameter(Mandatory=$true,ParameterSetName="mailTo")]
    [string] $logDir,

    # email address to mail report to
    [Parameter(Mandatory=$false,ParameterSetName="mailTo")]
    [string] $mailTo,

    # SMTP host used to send email
    [Parameter(Mandatory=$true,ParameterSetName="mailTo")]
    [string] $smtpHost,

    # option, eject media when done
    [Parameter(Mandatory=$false,ParameterSetName="base")]
    [Parameter(Mandatory=$false,ParameterSetName="mailTo")]
    [switch] $eject = $false,

)

echo "logDir=$logDir"
echo "mailTo=$mailTo"
echo "smtpHost=$smtpHost"
echo "include=$include"
echo "backupTo=$backupTo"
echo "eject=$eject"