PowerShell Providers CMDlets -2
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In this lecture we will take a look at Item property and path cmdlets.
ItemProperty cmdlets
- New-ItemProperty - creates a new property for a specified item and sets its value.Typically, this cmdlet is used to create new registry values.
- Get-itemProperty gets the property of an item like viewing registry properties and their values. You can use this cmdlet to get information about directories, files or registry entries.
- Remove-ItemProperty – This deletes a property and its value from an item. You can use it to delete registry values and the data that they store.
Please note: That the registry entry must exist before you can edit the entry.
First, we need to create a new registry key in the HKLM registry hive. We will use the New-item cmdlet.
In the file system, New-Item creates files and folders. In the registry, New-Item creates registry keys and entries.
Be sure to open PowerShell as an Administrator.
Using this command we will create a registry key named MyCompany.
Command #1
New-Item -Path "HKLM:\Software\MyCompany"
Press return
Displayed is our registry key MyCompany
Now we need to use the command New-itemproperty to add a new registry entry to the MyCompany registry key.
Command #2
New-Itemproperty -Path "HKLM:\Software\MyCompany" -name NewProperty -value NewPropertyValue
Press return
We just added the name NewProperty to the registry.
Now we need to add a new value of 400 employees to my company.
Command #3
New-itemproperty -path HKLM:\Software\MyCompany -name NoOfEmployees -value 400
Press return
And there is our employee values of 400.
Let’s take a look at the results by taking a look at the windows registry editor.
- From the search bar type registry
- From HKLM, follow the path software\MyCompany
- Click MyCompany
And there is our registry key and our entries.
Now let’s take a look at the results by using the get-itemproperty cmdlet.
Type CLS – Press return
Command #4
Get-itemproperty hklm:\software\mycompany
Press return
And you can see all our entries.
Now we will remove the registry value NewProperty that we created using Command #2
Command#5
Remove-Itemproperty -Path "HKLM:\Software\MyCompany" -name NewProperty
Press return
- Now run Command #4 again and notice that the NewProperty value has been removed.
Now we will remove the MyCompany registry entry by using the cmdlet remove-item
Command #6
Remove-Item -Path "HKLM:\Software\MyCompany"
Press return
Rerun Command #4 and you will see that MyCompany has been removed.
Path cmdlets
Now let’s checkout several of the path cmdlets
- Test-Path - Determines whether all elements of the path exist. This cmdlet is handy if you are writing a script and you want to test whether the path to a file is true or false. Test path can save you a lot of time.
For Example: Perhaps you need to check to see if the password log is present in the debug directory.
Command #7
Test-Path 'C:\windows\debug\PASSWD.LOG'
Press return
The cmdlet returns true, so we know that passwd.log file is in that folder.
Now let’s check out the Resolve-path cmdlet
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