PowerShell Providers CMDlets -2
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In this lecture we will take a look at Item property and path 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.
New-Item -Path "HKLM:\Software\MyCompany"
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.
New-Itemproperty -Path "HKLM:\Software\MyCompany" -name NewProperty -value NewPropertyValue
We just added the name NewProperty to the registry.
Now we need to add a new value of 400 employees to my company.
New-itemproperty -path HKLM:\Software\MyCompany -name NoOfEmployees -value 400
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
And you can see all our entries.
Now we will remove the registry value NewProperty that we created using Command #2
Remove-Itemproperty -Path "HKLM:\Software\MyCompany" -name NewProperty
- 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
Remove-Item -Path "HKLM:\Software\MyCompany"
Rerun Command #4 and you will see that MyCompany has been removed.
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.
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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