IT Knowledge Base

To get the powershell version run:

$psversiontable

To run another version of powershell run for example:
powershell -version 2.0

If you run the command without the management tools then you won’t have the tabs to configure the snmp-service. By the way the argument –Whatif shows you in advance what would be installed if you run the command. So to actually installe it run the command without –WhatIf.

#Add-WindowsFeature -Name SNMP-Service -IncludeAllSubFeature -IncludeManagementTools –Restart –WhatIf

Show-Command opens a new dialog where you can browse comfortably trough all commands.

You can use the Get-EventLog. Example:
Get-EventLog -LogName Application -Source "*Update*" | Format-List
Get-EventLog -LogName Application –Newest 10

Like ssh you can run a remote session in powershell.

Test if remote session is enabled
#Test-WsMan [Computername]

If you get a result, it should be up and running. Otherwise you need to activate it on the remote server like this.

Enable PowerShell Remoting on a Server
1. Run Powershell as an administrator
2. #Enable-PSRemoting –Force
This command starts the WinRM server service and sets it automatically to start with the system. It also creates a firewall rule that allows incoming connections.

Workgroup
If your computers aren’t in a domain you need to do a couple of more steps to make a trust between them. You need to edit the TrustedHosts on both sides. You could put the IP Adresses comma-seperated instead of * to further restrict it. With the * it will allow any host.

1. #Set-Item wsman:\localhost\client\trustedhosts *
2. #Restart-Service WinRM

Execute a Remote Command
#Invoke-Command -ComputerName COMPUTER -ScriptBlock { COMMAND } -credential USERNAME

Start a Remote Session
#Enter-PSSession -ComputerName COMPUTER -Credential USERNAME

Get-ChildItem -r *lana*.mp3 | Copy-Item -destination D:\Lana

Short example:
dir –R –I *.exe

Long one:
Get-ChildItem -recurse –include *.exe

Search inclusive text:Get-ChildItem -recurse *.exe | Select-String searchtext

Today i tried to install VMWare vSphere PowerCLI and got the vbscript error message.

Follow this steps to solve the problem:

1. Create a backup
2. Delete following registry entries:

Win32 Bit
HKCU\SOFTWARE\Classes\CLSID\{B54F3741-5B07-11CF-A4B0-00AA004A55E8}
HKCU\SOFTWARE\Classes\CLSID\{F414C260-6AC0-11CF-B6D1-00AA00BBBB58}

Win64 Bit
HKCU\SOFTWARE\Classes\Wow6432Node\CLSID\{B54F3741-5B07-11CF-A4B0-00AA004A55E8}
HKCU\SOFTWARE\Classes\Wow6432Node\CLSID\{F414C260-6AC0-11CF-B6D1-00AA00BBBB58}

3. Run CMD as an Administrator
4. regsvr32 vbscript.dll
5. regsvr32 jscript.dll

Powershell is awesome.

Here a collection of some snippets:

Check who is accessing a file on a server:
net file | where {$_ –match “$filename”}

More:
Get-Service | Sort-Object -Descending Status | ForEach{if($_.Status
-eq “Running”){Write-Host $_.Name -ForegroundColor green} else {Write-Host $_.Na
me -ForegroundColor red}}

Get-Service | ConvertTo-Html -Property Name, Status | ForEach {if($_
-like “*<td>Running</td>*”) {$_ -replace “<tr>”, “<tr bgcolor=green>”} else {$_
-replace “<tr>”, “<tr bgcolor=red>”}} > .\get-service.html

Get-PSDrive | Sort-Object Used -Descendind

New-PSDrive -name FK -psprovider FileSystem -root C:\Temp\Powershell\Files

Set-Location FK:
Get-ChildItem * -Exclude *.tmp, *.temp | Select-Object name, length | Sort-Object Length, Name -Descending

Get-Alias | Sort-Object

Get-Service | Group-Object Status
Get-Service | Get-Member
Get-Service | where{$_.status -eq “stopped”}

Get-ChildItem | Group-Object Extension | Sort-Object Count -Descending
Get-ChildItem | Measure-Object length -average -sum -maximum -minimum
Get-ChildItem | where-object{$_.length -gt 2MB}
Get-ChildItem | where {$_.PSIsContainer}

$a=Get-ChildItem | Select-Object Extension | Sort-Object Extension -unique
$a | ForEach {“.\Neu”+$_.Extension} | ForEach {NewItem $_ -type directory}

$a=Get-ChildItem | where {$_.PsIsContainer -eq -0}
$a | foreach{Copy-Item $_.FullName (“.\Neu” + $_.Extension + “\” + $_.Name)}

Get-ChildItem | foreach{$_.IsReadOnly = -1}

Get-ADUser -Filter *
Get-Command *user*

Simply add this to your command:
| out-File Path$