Jan 2016 Scripting Games

Jan2016-ScriptingGames

<#
.Synopsis
   Get the Up time (Last boot time) of target machines.
.EXAMPLE
   Get-Uptime -Computername DC1,NLB1,NLB2
.EXAMPLE
   $Collection | Gup
.EXAMPLE
   $Collection | Get-Uptime | Export-CSV C:\Temp\UpTime.csv -nti
.EXAMPLE
   Get-Uptime -ComputerName DC1,NLB1,NLB2 | Format-Table -AutoSize
#>
function Get-Uptime
{
    [CmdletBinding()]
    [Alias('gup')]

    Param
    (
        [AllowNull()]
        [Parameter(Mandatory=$false,
                   ValueFromPipelineByPropertyName=$true,
                   ValueFromPipeline=$true,
                   Position=0)]
                   [String[]]
        $ComputerName

    )

    Begin
    {
        #if no computername passed in by user, use Localhost for the Computername Variable
        if (!($PSBoundParameters.ContainsKey('ComputerName'))){$ComputerName = "$Env:COMPUTERNAME"}
    }
    Process
    {
    foreach ($Computer in $ComputerName){
        if (Test-Connection $Computer -Count 1 -Quiet){

     #Gather last boot up time from WMI
     $Basetime = Get-WmiObject -ComputerName $Computer -Class WIN32_Operatingsystem


     #Create Custom object with the information we need
     $obj = "" | Select @{Name='ComputerName';    Expression={$Basetime.PSComputerName}},
                        @{Name='Start Time';      Expression={$Basetime.ConverttoDateTime($Basetime.LastBootUpTime)}},
                        @{Name='Uptime (Days)';   Expression={[int][math]::round((New-TimeSpan -Start ($Basetime.ConverttoDateTime($Basetime.LastBootUpTime)) -End (Get-date)).totaldays ,2.4)}},
                        @{Name='Status';          Expression={if ($Basetime.LastBootUpTime -eq $Null){return 'ERROR'}else {return 'OK'}}},
                        @{Name='MightNeedPatches';Expression={if ([int][math]::round((New-TimeSpan -Start ($Basetime.ConverttoDateTime($Basetime.LastBootUpTime)) -End (Get-date)).totaldays ,2.4) -gt 30){return $true}else{return $false}}} 
 
    
        } else {Write-Warning "$Computer is NOT online";$obj = "" | Select @{Name='ComputerName';Expression={$Computer}},@{Name = 'Status';Expression = {return "OFFLINE"}}}

     [Array]$ObjArray += $Obj
     
    } 
      
   } #End of Process

    End
    {
      #display obj
      $ObjArray 
    }
}