January 2016 Scripting Games

January 2106 Scripting Games.ps1

<#
.Synopsis
   Get the up time for a list of machines
.EXAMPLE
   Get-Uptime
.EXAMPLE
   Get-Uptime -ComputerName COMPUTER01,COMPUTER02,COMPUTER03
.EXAMPLE
   Get-Uptime -ComputerName COMPUTER01,COMPUTER02,COMPUTER03 | Format-Table
#>
function Get-Uptime
{
    [CmdletBinding()]
    [Alias()]
    [OutputType([int])]
    Param
    (
        # Param1 help description
        [Parameter(ValueFromPipelineByPropertyName=$true,
                   Position=0)]
        $ComputerName=$env:COMPUTERNAME
    )

    Begin
    {
    }
    Process
    {
        ForEach($computer in $ComputerName)
        {
            $cimOK = $true

            If(Test-Connection -Quiet $computer -Count 1)
            {
                try
                {
                    $os = Get-CIMInstance Win32_OperatingSystem -ComputerName $computer -ErrorAction Stop
                }
                Catch
                {
                    $cimOK = $false
                }

                If($cimOK)
                {
                    # We've retrieved the OS information from CIM so can calculate our other fields
                    $status = "OK"
                    $startTime = $os.LastBootUpTime
                    $uptime = [math]::Round(($os.LocalDateTime - $os.LastBootUpTime).TotalDays,1)
                    If($uptime -ge 30)
                    {
                        $mightNeedPatched = $true
                    }
                    Else
                    {
                        $mightNeedPatched = $false
                    }
                }
                Else
                {
                    # There was a problem with CIM
                    $status = "ERROR"
                    $startTime = ""
                    $uptime = ""
                }
            }
            Else
            {
                $status = "OFFLINE"
                $startTime = ""
                $uptime = ""
                Write-Warning "$computer is OFFLINE"
            }

            $props = [ordered]@{'ComputerName'=$computer;
                                'StartTime'=$startTime;
                                'Uptime (Days)'=$uptime;
                                'Status'=$status;
                                'MightNeedPatched'=$mightNeedPatched;
                               }
            $obj = New-Object -TypeName PSObject -Property $props
            Write-Output $obj                       
        }

    }
    End
    {
    }
}