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We know that the Windows Certificates are resided in the Certificate store but finding the certificate with its name or getting particular certificate details might be cumbersome sometimes.You can access the certificate store using MMC or using CertMgr.msc command. There are certificates stored for CurrentUser, ServiceAccount, and Local Computer. To access the certificate store using PowerShell, you need to access the PSDrive, and Certificates are stored in the drive called Cert as you can see below.PS C:\> Get-PSDrive cert | ft -AutoSize Name Used (GB) Free (GB) Provider Root CurrentLocation ---- --------- --------- -------- ---- --------------- Cert Certificate \Let say ... Read More
To check if the PSCustomObject is empty or not in PowerShell, we need to check the fields of the PSCustomObject. Consider the below example, Example$output = [PSCustomObject]@{ Name = 'John' City = 'New York' Country = 'US' Company = 'Alpha' } $output1 = [PSCustomObject]@{ Name = '' City = '' Country = '' Company = '' }OutputPS C:\WINDOWS\system32> $output Name City Country Company ---- ---- ------- ------- John New York US Alpha PS C:\WINDOWS\system32> $output1 Name City Country Company ... Read More
If you want to delete the entire text file content using PowerShell, then we can use the Clear-Content command. For example, we have the below text file called Locations.txt on the C:\Temp path. You can check the content using the below file.Get-Content C:\temp\locations.txtTo clear the file content, we can use the below command.Clear-Content C:\Temp\locations.txt -Force-Force switch is used to clear the contents without user confirmation.When you use this command with the pipeline in the Get-Content command, it will generate an IO Exception error that the file is in use because we are already retrieving the contents using Get-Content and then ... Read More
To get the installed windows updates using PowerShell, we can use the Get-Hotfix command. This command gets the hotfixes and updates that are installed on the local and the remote computer.This command is the part of Microsoft.Management.PowerShell utility.ExampleGet-HotFixOutputPS C:\> Get-HotFix Source Description HotFixID InstalledBy InstalledOn ------ ----------- -------- ----------- ----------- LABMACHINE... Update KB3191565 LABMACHINE2K12\Ad... 1/15/2021 12:00:00 AM LABMACHINE... Update KB2999226 LABMACHINE2K12\Ad... 1/13/2021 12:00:00 AMIn the above output, you can see the SourceMachine Name, HotfixID, InstalledBy, and the Installed Date.You can also sort it by the InstalledOn parameter. For example, ExampleGet-HotFix | Sort-Object InstalledOn -DescendingThis command supports the ComputerName parameter which ... Read More
Test-Path command checks if the particular path exists or not and returns the Boolean output (True or False) while Resolve-Path command displays the particular directory if exists otherwise throws an exception. For example, For the path to exist, ExamplePS C:\> Test-Path C:\Temp\ True PS C:\> Resolve-Path C:\Temp\ Path ---- C:\Temp\For the path doesn’t exist, PS C:\> Test-Path C:\Temp11\ False PS C:\> Resolve-Path C:\Temp11\ Resolve-Path : Cannot find path 'C:\Temp11\' because it does not exist. At line:1 char:1 + Resolve-Path C:\Temp11\ + ~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ObjectNotFound: (C:\Temp11\:String) [Resolve-Path], ItemNotFoundException + FullyQualifiedErrorId : PathNotFound, Microsoft.PowerShell.Commands.ResolvePathCommandResolve-Path is also used to get the ... Read More
To browse through the registry in PowerShell, we can use the Get-ChildItem command. For example to get all keys from the path HKLM:\Hardware we can use the below command.Get-ChildItem HKLM:\HARDWAREOr you can set the location and use the dir (get-ChildItem or ls) command to browse the path.ExamplePS C:\> Set-Location HKLM:\HARDWARE PS HKLM:\HARDWARE> dirOutputHive: HKEY_LOCAL_MACHINE\HARDWARE Name Property ---- -------- ACPI DESCRIPTION DEVICEMAP RESOURCEMAPTo get the properties of the key, use the Get-ItemProperty command.ExampleSet-Location 'HKLM:\SOFTWARE\VMware, Inc.' Get-ItemProperty '.\VMware Drivers'Outputefifw.status : 1|1.1.0.0.0.1|oem2.inf vmxnet3.status : 1|1.1.8.16.0.1|oem3.inf pvscsi.status : 1|1.1.3.15.0.1|oem4.inf vmusbmouse.status : 1|1.12.5.10.0.1|oem5.inf vmmouse.status : 1|1.12.5.10.0.1|oem6.infRead More
To delete the registry key value using PowerShell, we can use the Remove-ItemProperty command. Suppose we have the registry NodeSoftware and its Property is AppSecurity. We need to delete its key using the Remove-ItemProperty command.PS C:\> Get-Item HKLM:\SOFTWARE\NodeSoftware Hive: HKEY_LOCAL_MACHINE\SOFTWARE Name Property ---- -------- NodeSoftware AppSecurity : 1To delete the registry key, PS C:\>Remove-ItemProperty HKLM:\SOFTWARE\NodeSoftware\ -Name AppSecurity -Force -Verbose VERBOSE: Performing the operation "Remove Property" on target "Item: HKEY_LOCAL_MACHINE\SOFTWARE\NodeSoftware\ Property: AppSecurity".You can also delete property by setting the location. For example, ExamplePS C:\> Set-Location HKLM:\SOFTWARE\NodeSoftware PS HKLM:\SOFTWARE\NodeSoftware> Remove-ItemProperty -Path . -Name AppSecurity -Force -VerboseTo remove Item property using Pipeline, Get-Item HKLM:\SOFTWARE\NodeSoftware | Remove-ItemProperty -Name AppSecurity -Force -VerboseRead More
When we create a plot using ggplot2, the axes labels are automatically generated for both the axes. We might want to use those axes labels for report writing or some other purpose, therefore, extraction of those labels for a plot created by using ggplot2 package can be found by using the ggplot_build function as shown in the below example but we need to save the plot in an object.Consider the below data frame −Example Live Demox
To change the defaults for ggplot2 geoms, we need to use update_geom_defaults function. If we want to change the shape of points for scatterplot, we can use the below syntax −update_geom_defaults("point",list(shape=”point_shape_number”))The point shape number ranges from 0 to 25. We can change that according to our need.Consider the below data frame −Example Live Demox
If list elements are of equal size having numerical values then the boxplot for each element can be created by using ggplot2 but before creating the boxplot we would need to convert the list to a data frame. The conversion of list elements to a data frame will be done by unlisting of elements and creating two columns, one for categories and one for response variable. Check out the below example to understand how it works.Consider the below list −Example Live DemoList