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A certificate thumbprint is a hash or signature of the thumbprint and it plays a crucial role in the security aspect. To get the certificate thumbprint using PowerShell is very much easy.We just need to retrieve the path where certificates reside and the default property that is shown on the console will include the certificate thumbprint.For example, we are going to retrieve the certificate from the personal store.ExampleGet-ChildItem Cert:\LocalMachine\My\OutputPSParentPath: Microsoft.PowerShell.Security\Certificate::LocalMachine\My Thumbprint Subject ---------- ... Read More
Suppose we know the Thumbprint of the certificate then we can use the below command to update or change the certificate's friendly name.Example$cert = Get-ChildItem ` -Path Cert:\LocalMachine\My\43E6035D120EBE9ECE8100E8F38B85A9F1C1140F$cert.FriendlyName = "mysitecert"The above command will update the certificate-friendly name to "mysitecert". If you don't know the thumbprint or how to retrieve it, you can use different properties like Subject name, friendly name, etc.Example$cert = Get-ChildItem -path ` Cert:\LocalMachine\My\` | where{$_.Subject -eq "CN=mysite.local"}$cert.FriendlyName = "mysitecert"
To install the certificate using PowerShell, we need to use the Import-Certificate command. For example, we have a certificate stored at the location C:\temp\Mycert.cer and we need to install it in the Personal store of the local machine.ExampleImport-Certificate -FilePath C:\Temp\Mycert.cer ` -CertStoreLocation Cert:\LocalMachine\My\You can also use the below method.PS C:\> Set-Location Cert:\LocalMachine\My\ PS Cert:\LocalMachine\My\> Import-Certificate -FilePath C:\Temp\Mycert.cerTo install a certificate on the remote computer, use the Invoke-Command method.SyntaxInvoke-Command -ComputerName RemoteServer1 -ScriptBlock {Import-Certificate -FilePath C:\Temp\Mycert.cer ` -CertStoreLocation Cert:\LocalMachine\My\ }The above command will install the certificate on RemoteServer1 from the path C:\temp of the remote server to the personal store of the remote machine.Read More
To export or download a certificate from the certificate store using PowerShell, we need to use the command Export-Certificate.First, you need to get the certificate details from the store. If you know the thumbprint, you can directly get the certificate details using the thumbprint and then use that details to export the certificate.Example$cert = (Get-ChildItem Cert:\LocalMachine\My\43E6035D120EBE9ECE8100E8F38B85A9F) Export-Certificate -Cert $cert -Type CERT -FilePath C:\Temp\Mycert.cerIn the above example, we are exporting the certificate from the LocalMachine -> Personal Store. You can choose a different path. Here, the certificate would be exported to the C:\temp\MyCert.cer. You can use the different types like P7B, SST to export the certificate. Alternatively, you ... Read More
To create a self-signed certificate there are various methods like OpenSSL, IIS, PowerShell, etc. Here, we will see how we can create a self-signed certificate with PowerShell.To create a self-signed certificate with PowerShell, we need to use the New-SelfSignedCertificate command. When you create a self-signed certificate manually, you need to give few properties like DNSName, FriendlyName, Certificate start date, expiry date, Subject, a path of the certificate. Similarly, you can use those properties for this command to create it. Not all properties are mandatory.ExampleNew-SelfSignedCertificate ` -CertStoreLocation Cert:\LocalMachine\My ` -DnsName "testdomain.local" -VerboseOutputPSParentPath: Microsoft.PowerShell.Security\Certificate::LocalMachine\My Thumbprint ... Read More
To create any dummy file of having any size with PowerShell, we can use the below command.Example$f = new-object System.IO.FileStream c:\temp\test.dat, Create, ReadWrite $f.SetLength(50MB) $f.Close()The above command will create 50MB of Test.dat dummy file in the C:\temp. Such files are used for testing purposes.
To get the default documents stored on the IIS default website page, you can use the below command.ExampleGet-WebConfigurationProperty -Filter //defaultDocument/files/add -PSPath 'IIS:\Sites\Default Web Site' -Name value ` | select valueOutputValue ----- Default.htm Default.asp index.htm index.html iisstart.htmTo check if the Default document contains a specific file, (Get-WebConfigurationProperty -Filter //defaultDocument/files/add -PSPath 'IIS:\Sites\Default Web Site' -Name value).value -contains 'iisstart.htm'The above command checks if the IIS default website contains any iisstart.htm on the default document page.You can also use another website instead of using 'Default Web site'. To get the default documents file at the IIS level, (Get-WebConfigurationProperty -Filter //defaultDocument/files/add -PSPath 'IIS:\' ... Read More
To copy only updated or newer files with PowerShell, we can use Copy-Item with some logic in the script that to check if the files exist on the destination folder if not then copy that file and if yes then compare the timestamp and copy the latest file. This would be tricky because we need to write several lines of code for it.But Windows support xCopy utility which can directly copy the newer or updated files and this utility we can accommodate in PowerShell as well.xCopy uses a switch called /d. its actual syntax is, Syntax/d [:MM-DD-YYYY]This means if the date ... Read More
In this program, we will blur an image using a Gaussian filter. The ImageFilter class in the pillow library contains a function called GaussianBlur() which helps to apply the gaussian blur filter. It takes only one parameter that is blur radius.Original ImageAlgorithmStep 1: Import Image and ImageFilter from Pillow. Step 2: Open the image. Step 3: Call the gaussianblur() method and specify the radius Step 4: Display the output.Example Codefrom PIL import Image, ImageFilter im = Image.open('image_test.jpg') im1 = im.filter(ImageFilter.GaussianBlur(radius = 9)) im1.show()Output
In this program, we will apply a minimum filter on an image using the pillow library. In maximum filtering, the value of each pixel in a selected window of the image is replaced by the maximum pixel of that window. The filter function is used to apply different filters using the pillow library.Original ImageAlgorithmStep 1: Import Image from Pillow. Step 2: Open the image. Step 3: Call the filter function and specify maxfilter. Step 4: Display the output.Example Codefrom PIL import Image, ImageFilter im = Image.open('testimage.jpg') im1 = im.filter(ImageFilter.MaxFilter(size = 7)) im1.show()Output