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“Relative path is not supported” error generally occurs with the PowerShell DSC when we download a file from online or Website and we use “File” DscResource for that.In the below example, we are downloading the PowerShell 7.1.4 version from GitHub using DSC to the local computer and we get the error below.ExampleConfiguration FileCopy{ Node LocalHost{ File CopyFromBlob{ SourcePath = "https://github.com/PowerShell/PowerShell/releases/download/v7.1.4/PowerShell-7.1.4-win-x86.msi" DestinationPath = "C:\Temp\" Ensure = 'Present' } } } FileCopy -OutputPath C:\Temp\dsc\FileCopy Start-DscConfiguration -Path C:\Temp\dsc\FileCopy -Wait -ForceOutputRelative path is ... Read More
To install the DSC resource using PowerShell, we can use the same command to install modules in PowerShell (Install-Module).The Find-DscResource command would get all the available DSC resources. To search the specific DSC resource, you can provide the -Name parameter in the Find-DscReource command. For example, we need to search for the FilesAndFolder DSC resourceFind-DSCResource -Name filesandfoldersOutputName Version ModuleName Repository ---- ------- ---------- ---------- FilesAndFolders 0.3.212 CommonTasks PSGalleryTo install this module, we can pipeline the Install-Module command.Find-DSCResource -Name filesandfolders | Install-Module -Force -VerboseOnce the module is installed, we can ... Read More
To generate or append multiple outputs in the HTML file using PowerShell, we need to use the - Fragment parameter in the ConvertTo-HTML command.For example, let say we need to generate the computer utilization report which includes the top 5 consuming processes, stopped services, and the disk utilization report. A single report can be generated by sending the output to the ConvertTo-HTML pipeline command.Example$Heading = "System Utilization Report" $procs = Get-Process | Sort-Object -Property CPU -Descending| Select - First 5 | ` ConvertTo-Html -Property ProcessName, ID, CPU -Fragment - PreContent "High Utilization Processes" $services = Get-Service | ... Read More
To generate an HTML report using PowerShell, we can use the ConvertTo-HTML command. For example, let say we need to get the services to report in HTML format then we can use ConvertTo-HTML as a pipeline.Get-Service | ConvertTo-Html | Out-File C:\Temp\Services.html ii C:\Temp\services.htmlThe first command will retrieve the output in the HTML file and the second command (ii) is the alias of the Invoke-Item command.Once you check the output, It selects all the properties of the command. To select only a few properties, you can either use the Select command or use the -Property parameter in the ConvertTo-Html command. Both the ... Read More
To create dynamic columns or headers using CSV, we can use multiple methods but the one method that I find most suitable is the PSObject method.Let assume that your CSV column headers depend on the input provided by the user. Input can be a text file, user prompt for headers, array, etc. For this example, we will use the text file as input.We have the below columns (headers) to create in the CSV file.We will use the below command to create headers using PSObject and then export them into the CSV file.$object = New-Object psobject foreach($item in (gc C:\Temp\DynamicHeaders.txt)){ ... Read More
To delete the Azure blob using Azure CLI, we can use “az storage blob” command with the “delete” parameter. Before running this command, we first need to make sure that the azure account is connected (az login) and the proper subscription is set (az account set).To work with the azure storage account we need to authenticate to the storage. We can use storage key or the storage connections string. Here, we have shown how to retrieve the connections string.$storageaccount = 'az204storage05june' $connectionstring = az storage account show-connection-string - n $storageaccount -otsvThe below command will delete the azure storage blob named ... Read More
To get blobs inside the Azure storage container using PowerShell, we will use the Get-AzStorageBlob command. . Before running this command, we need to make sure that the Azure cloud account is connected (Connect-AzAccount) and the proper subscription is set in which the storage account resides (Set-AzContext).To work with the storage accounts we first need to set the Context for it and we will use the storage account key to set the context.$rg = "az204" $storageaccount = "az204storage05june" $key = (Get-AzStorageAccountKey -ResourceGroupName $rg - Name $storageaccount)[0].Value $context = New-AzStorageContext -StorageAccountName $storageaccount - StorageAccountKey $keyWe have now created the Azure storage ... Read More
When you run Invoke-WebRequest or Invoke-RestMethod command, sometimes you get the error “The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.” because there could be a certificate issue or the required windows version doesn’t support the TLS or SSL version. You can use the below command to bypass this error.[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true}Or you can use the below code to resolve this error.Exampleadd-type @" using System.Net; using System.Security.Cryptography.X509Certificates; public class TrustAllCertsPolicy : ICertificatePolicy { public bool CheckValidationResult( ServicePoint srvPoint, X509Certificate certificate, WebRequest request, ... Read More
ProblemWrite a program to implement linear regression algorithm.User has to enter total number of values.SolutionThe solution to compute the linear regression in C programming language is as follows −Linear regression finds the relationship between two variables by connecting a linear equation to the observed data. One variable is to be an explanatory variable, and the other is a dependent variable.The logic with regards to linear regression is explained below −for(i=0;i
ProblemWrite the user functions to Delete N – Characters from Position in a given string. Here, the string is given by the user at runtime.SolutionThe solution to delete n characters in a given string is as follows −AlgorithmRefer an algorithm to delete n characters in a given string.Step 1 − StartStep 2 − Read string at runtimeStep 3 − Read position from where we need to delete the charactersStep 4 − Read n, number of characters to delete from that positionStep 5 − Call the function deletestr(str, p, n) jump to step 7Step 6 − StopStep 7 − Called function deletestr(str, ... Read More