Category Archives: Powershell
Powershell – Get the First and Last Day of the Month
You could do this in different ways with powershell. But the whole idea is to keep it simple
$CURRENTDATE=GET-DATE -Format "MM/dd/yyyy" $FIRSTDAYOFMONTH=GET-DATE $CURRENTDATE -Day 1 $LASTDAYOFMONTH=GET-DATE $FIRSTDAYOFMONTH.AddMonths(1).AddSeconds(-1) $FIRSTDAYOFMONTH $LASTDAYOFMONTH
Manage Storage of IIS Log Files – Scheduled Deletion of IIS Logs
Drive Space Full with IIS Log Files / Reclaim Disk Space
Are your Local Drives of your IIS Server running out of space? Have you checked the size of your IIS Logs?
If your IIS was setup by a professional; you would not have to go through this issue. The log files would have been managed appropriately
Ideally I do not see a purpose to keep IIS Log files beyond a period of 1 month. Those older than one month should ideally be removed to prevent disk space issues
I found below posts which will assist you. Before you use the below scripts; please identify the location of your log files
Using Powershell
http://www.codeproject.com/Articles/663000/Simple-Powershell-script-to-clean-up-IIS-log-files
Using VBScript
http://www.iis.net/learn/manage/provisioning-and-managing-iis/managing-iis-log-file-storage#02
By default; you would find them on C:\inetpub\logs\LogFiles\
To verify the location; open IIS and select the Default Website and click Logging
Take note of the path mentioned in the directory field
Powershell Script – Not digitally signed
Unable to Run Powershell Script – Error: Not digitally signed
Error: The file *.ps1 is not digitally signed. The script will not execute on the system
+FullyQualifiedErrorID: UnauthorizedAccess
To resolve above error; set the execution policy to unrestricted
Set-ExecutionPolicy -ExecutionPolicy Bypass
Powershell – Export-Csv to export multi-valued attributes
Passing Mutliple Variables to Export-CSV cmdlet
If you have overcome a situation where-in; while exporting results using Export-CSV; multi-valued columns return just the property System.String[]; I have just the right solution for you
If the multi-valued column name is recipients; use the column as below
@{Name=’recipients’;Expression={[string]::join(“;”, ($_.recipients))}}
Powershell – Display command output one page at a time
Please note that the below command applies for use in the Windows Powershell Console and not in the Windows Powershell ISE
Use the More function to achieve the page wise output
Get-Service -ComputerName computername | more
Get-WmiObject : The RPC Server is unavailable
Error Message when running Get-WmiObject cmdlet on a Remote Machine
Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) At line:1 char:1 + Get-WmiObject win32_bios -ComputerName remotecomputername|Select PSComputerName,Manufact ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], COMException + FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand
Verify DCOM Settings on Remote Machine
- The first step is to check is if the DCOM Service is enabled in the Remote Machine
- From the remote machine; From the Start Menu; type dcomcnfg
- Open Computers – Right Click My Computer – Properties
- If the checkbox for ‘Enable Distributed COM on this computer ‘ is ticked; you have got through the first step. By default this option is always enabled
Check the Windows Firewall on Remote Machine
- The next step is to check Windows Firewall. It is most likely that your firewall is enabled.
- For testing purposes, please disable the Firewall on the remote machine and test the script. I’m sure you have got the result. If not, I would sadly request you to look for answers elsewhere 😦
- It is not advisable to disable your Firewall to get this working and most of all if you are administering a network of over 100 or 1000 machines this is not practical either. So the best way is to identify the Communication Port that was blocked when running the script. So turn back your Firewall On.
Enabling Logging on Windows Firewall and Identify Blocked Port on Remote Machine
- From Advanced Settings of your Firewall; right click Windows Firewall with Advanced Security on Local Computer and select Properties
- From the Domain Profile Tab; click Customize under Logging
- Select the Yes drop-down for Log dropped packets
- Take note of the Logfile Location and filename from the name field
- Click Ok to confirm
- From your PC or a Server PC; run the Get-WmiObject cmdlet once again so as to receive the error
- From the remote machine; run Notepad as Administrator and open the pfirewall.log file
- Identify the Drop Action from the Firewall that points to the time we ran the Get-WmiObject cmdlet and the source-ip (src-ip) of the machine you ran the script from
- Take note of the Protocol TCP/UDP and Destination Port Number (dst-port) Eg: 49155
- You can enable an Inbound Rule for this your problem will solved. If you are administering a large network; apply this to a group policy instead.
Unable to Install Windows Management Framework 3 on Windows 2008 SP2 Server
Are you getting the below error when installing Windows Management Framework 3 on your Windows 2008 SP2 Server?
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Well, all you need to verify is the current version of your .NET Framework. To verify the current version; proceed to the registry
HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP
The branch is most likely only upto V3 or V3.5
Download and Install .NET Framework 4 and your system will be ready to Install the Windows Management Framework 3
You may also find below post useful
http://www.happysysadm.com/2012/06/upgrading-to-powershell-30-on-windows.html
Write-EventLog The source name does not exist on computer
Write-EventLog : The source name “” does not exist on computer “”
If you have received this error using Powershell when trying to Write to the Event Log; it’s because you have not registered the source yet
Use the New-EventLog cmdlet to register the source prior to writing to the event log
New-EventLog -LogName Application -Source <Sourcename>
