Help combine my PowerShell scripts

#
# Required functions
#

Function Get-PendingReboot 
{ 
<# 
.SYNOPSIS 
    Gets the pending reboot status on a local or remote computer. 
 
.DESCRIPTION 
    This function will query the registry on a local or remote computer and determine if the 
    system is pending a reboot, from either Microsoft Patching or a Software Installation. 
    For Windows 2008+ the function will query the CBS registry key as another factor in determining 
    pending reboot state.  "PendingFileRenameOperations" and "Auto Update\RebootRequired" are observed 
    as being consistant across Windows Server 2003 & 2008. 
   
    CBServicing = Component Based Servicing (Windows 2008) 
    WindowsUpdate = Windows Update / Auto Update (Windows 2003 / 2008) 
    CCMClientSDK = SCCM 2012 Clients only (DetermineIfRebootPending method) otherwise $null value 
    PendFileRename = PendingFileRenameOperations (Windows 2003 / 2008) 
 
.PARAMETER ComputerName 
    A single Computer or an array of computer names.  The default is localhost ($env:COMPUTERNAME). 
 
.PARAMETER ErrorLog 
    A single path to send error data to a log file. 
 
.EXAMPLE 
    PS C:\> Get-PendingReboot -ComputerName (Get-Content C:\ServerList.txt) | Format-Table -AutoSize 
   
    Computer CBServicing WindowsUpdate CCMClientSDK PendFileRename PendFileRenVal RebootPending 
    -------- ----------- ------------- ------------ -------------- -------------- ------------- 
    DC01     False   False           False      False 
    DC02     False   False           False      False 
    FS01     False   False           False      False 
 
    This example will capture the contents of C:\ServerList.txt and query the pending reboot 
    information from the systems contained in the file and display the output in a table. The 
    null values are by design, since these systems do not have the SCCM 2012 client installed, 
    nor was the PendingFileRenameOperations value populated. 
 
.EXAMPLE 
    PS C:\> Get-PendingReboot 
   
    Computer     : WKS01 
    CBServicing  : False 
    WindowsUpdate      : True 
    CCMClient    : False 
    PendComputerRename : False 
    PendFileRename     : False 
    PendFileRenVal     :  
    RebootPending      : True 
   
    This example will query the local machine for pending reboot information. 
   
.EXAMPLE 
    PS C:\> $Servers = Get-Content C:\Servers.txt 
    PS C:\> Get-PendingReboot -Computer $Servers | Export-Csv C:\PendingRebootReport.csv -NoTypeInformation 
   
    This example will create a report that contains pending reboot information. 
 
.LINK 
    Component-Based Servicing: 
    http://technet.microsoft.com/en-us/library/cc756291(v=WS.10).aspx 
   
    PendingFileRename/Auto Update: 
    http://support.microsoft.com/kb/2723674 
    http://technet.microsoft.com/en-us/library/cc960241.aspx 
    http://blogs.msdn.com/b/hansr/archive/2006/02/17/patchreboot.aspx 
 
    SCCM 2012/CCM_ClientSDK: 
    http://msdn.microsoft.com/en-us/library/jj902723.aspx 
 
.NOTES 
    Author:  Brian Wilhite 
    Email:   bcwilhite (at) live.com 
    Date:    29AUG2012 
    PSVer:   2.0/3.0/4.0/5.0 
    Updated: 01DEC2014 
    UpdNote: Added CCMClient property - Used with SCCM 2012 Clients only 
       Added ValueFromPipelineByPropertyName=$true to the ComputerName Parameter 
       Removed $Data variable from the PSObject - it is not needed 
       Bug with the way CCMClientSDK returned null value if it was false 
       Removed unneeded variables 
       Added PendFileRenVal - Contents of the PendingFileRenameOperations Reg Entry 
       Removed .Net Registry connection, replaced with WMI StdRegProv 
       Added ComputerPendingRename 
#> 
 
[CmdletBinding()] 
param( 
  [Parameter(Position=0,ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)] 
  [Alias("CN","Computer")] 
  [String[]]$ComputerName="$env:COMPUTERNAME", 
  [String]$ErrorLog 
  ) 
 
Process { 
  Foreach ($Computer in $ComputerName) { 
  Try { 
      ## Setting pending values to false to cut down on the number of else statements 
      $CompPendRen,$PendFileRename,$Pending,$SCCM = $false,$false,$false,$false 
       
      ## Setting CBSRebootPend to null since not all versions of Windows has this value 
      $CBSRebootPend = $null 
             
      ## Querying WMI for build version 
      $WMI_OS = Get-WmiObject -Class Win32_OperatingSystem -Property BuildNumber, CSName -ComputerName $Computer -ErrorAction Stop 
 
      ## Making registry connection to the local/remote computer 
      $HKLM = [UInt32] "0x80000002" 
      $WMI_Reg = [WMIClass] "\\$Computer\root\default:StdRegProv" 
             
      ## If Vista/2008 & Above query the CBS Reg Key 
      If ([Int32]$WMI_OS.BuildNumber -ge 6001) { 
        $RegSubKeysCBS = $WMI_Reg.EnumKey($HKLM,"SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\") 
        $CBSRebootPend = $RegSubKeysCBS.sNames -contains "RebootPending"     
      } 
               
      ## Query WUAU from the registry 
      $RegWUAURebootReq = $WMI_Reg.EnumKey($HKLM,"SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\") 
      $WUAURebootReq = $RegWUAURebootReq.sNames -contains "RebootRequired" 
             
      ## Query PendingFileRenameOperations from the registry 
      $RegSubKeySM = $WMI_Reg.GetMultiStringValue($HKLM,"SYSTEM\CurrentControlSet\Control\Session Manager\","PendingFileRenameOperations") 
      $RegValuePFRO = $RegSubKeySM.sValue 
 
      ## Query ComputerName and ActiveComputerName from the registry 
      $ActCompNm = $WMI_Reg.GetStringValue($HKLM,"SYSTEM\CurrentControlSet\Control\ComputerName\ActiveComputerName\","ComputerName")       
      $CompNm = $WMI_Reg.GetStringValue($HKLM,"SYSTEM\CurrentControlSet\Control\ComputerName\ComputerName\","ComputerName") 
      If ($ActCompNm -ne $CompNm) { 
    $CompPendRen = $true 
      } 
             
      ## If PendingFileRenameOperations has a value set $RegValuePFRO variable to $true 
      If ($RegValuePFRO) { 
        $PendFileRename = $true 
      } 
 
      ## Determine SCCM 2012 Client Reboot Pending Status 
      ## To avoid nested 'if' statements and unneeded WMI calls to determine if the CCM_ClientUtilities class exist, setting EA = 0 
      $CCMClientSDK = $null 
      $CCMSplat = @{ 
    NameSpace='ROOT\ccm\ClientSDK' 
    Class='CCM_ClientUtilities' 
    Name='DetermineIfRebootPending' 
    ComputerName=$Computer 
    ErrorAction='Stop' 
      } 
      ## Try CCMClientSDK 
      Try { 
    $CCMClientSDK = Invoke-WmiMethod @CCMSplat 
      } Catch [System.UnauthorizedAccessException] { 
    $CcmStatus = Get-Service -Name CcmExec -ComputerName $Computer -ErrorAction SilentlyContinue 
    If ($CcmStatus.Status -ne 'Running') { 
        Write-Warning "$Computer`: Error - CcmExec service is not running." 
        $CCMClientSDK = $null 
    } 
      } Catch { 
    $CCMClientSDK = $null 
      } 
 
      If ($CCMClientSDK) { 
    If ($CCMClientSDK.ReturnValue -ne 0) { 
      Write-Warning "Error: DetermineIfRebootPending returned error code $($CCMClientSDK.ReturnValue)"     
        } 
        If ($CCMClientSDK.IsHardRebootPending -or $CCMClientSDK.RebootPending) { 
      $SCCM = $true 
        } 
      } 
       
      Else { 
    $SCCM = $null 
      } 
 
      ## Creating Custom PSObject and Select-Object Splat 
      $SelectSplat = @{ 
    Property=( 
        'Computer', 
        'CBServicing', 
        'WindowsUpdate', 
        'CCMClientSDK', 
        'PendComputerRename', 
        'PendFileRename', 
        'PendFileRenVal', 
        'RebootPending' 
    )} 
      New-Object -TypeName PSObject -Property @{ 
    Computer=$WMI_OS.CSName 
    CBServicing=$CBSRebootPend 
    WindowsUpdate=$WUAURebootReq 
    CCMClientSDK=$SCCM 
    PendComputerRename=$CompPendRen 
    PendFileRename=$PendFileRename 
    PendFileRenVal=$RegValuePFRO 
    RebootPending=($CompPendRen -or $CBSRebootPend -or $WUAURebootReq -or $SCCM -or $PendFileRename) 
      } | Select-Object @SelectSplat 
 
  } Catch { 
      Write-Warning "$Computer`: $_" 
      ## If $ErrorLog, log the file to a user specified location/path 
      If ($ErrorLog) { 
    Out-File -InputObject "$Computer`,$_" -FilePath $ErrorLog -Append 
      }         
  }       
  }## End Foreach ($Computer in $ComputerName)       
}## End Process 
 
}## End Function Get-PendingReboot

#
# Import Configuration Manager
#

Import-Module 'C:\Program Files (x86)\Microsoft Configuration Manager\AdminConsole\bin\ConfigurationManager.psd1' -force

#
# Get Pending Reboot
#

Get-CMDevice -CollectionName "All Servers" |
  Select-Object -ExpandProperty Name |
  Get-PendingReboot |
  Export-Csv 'C:\Scripts\Pending Reboots\PendingRebootReport.csv' -NoTypeInformation

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