PowerShell Core for Linux Administrators Cookbook

How to do it...

Modify the script we used in the previous recipe, Adding default values to a parameter, to the following:

function Start-Count {
    param (
        # The current time, or the starting point
        [Parameter(Mandatory=$false)]
        [Alias("CT", "From")]
        [int]
        $CurrentTime=0,

        # The total number of seconds to count
        [Parameter(Mandatory=$false, Position=1)]
        [Alias("TT", "To")]
        [ValidateSet(5, 10, 15, 20)]
        [int]
        $TotalTime=10
    )

    while ($CurrentTime -le $TotalTime) {
        Write-Progress -Activity "Counting to $TotalTime" -Status "Counting: $CurrentTime seconds" -PercentComplete ($CurrentTime / $TotalTime * 100)
        Start-Sleep 1
        $CurrentTime++
    }
}

Run the following command and read the error:

PS> Start-Count -TotalTime 6