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Articles by Chirag Nagrekar
Page 29 of 40
How to generate a strong password using PowerShell?
To generate a strong password with the PowerShell, we can use 8 or more characters password. In the below example, we are going to use the 8 character password, you can change the number of characters as per your convenience.This script you can bind into windows forms and provide it to the IT helpdesk to set the password for new users.In this example, we will use the Random integers between 33 and 126 and convert it to the Character, considering them they are the ASCII values for characters.You can find more about ASCII values in the table provided in the ...
Read MoreHow to copy Items to the destination path with the different\\ncredentials in PowerShell?
To copy the items with the different credentials you need to use the credential parameter in the Copy-Item cmdlet.For example,Copy-Item C:\temp\* -Destination \Remoteshare\c$\temp -Credential (Get- Credential)Or$creds = (Get-Credential) Copy-Item C:\temp\* -Destination \Remoteshare\c$\temp -Credential $creds
Read MoreHow to Zip / Unzip files or folders using PowerShell?
Now it is easy to ZIP or extract (unzip) the files or folders using PowerShell. PowerShell has added features of the Archive module (Microsoft.PowerShell.Archive) from PowerShell 5.1 version.If you have PowerShell older version (version 4.0 or less) then you can download and install the module from the website or through the command line. However, only download and installing or manually copying the Archive module to the Module folder won’t work because it needs some dependent DLL files which are provided by .Net framework 4.5 so you need to consider upgrading .Net framework as well if it is below the 4.5 ...
Read MoreHow to create a User Menu in PowerShell?
When you are writing a script and if you want to provide the user to select one option among multiple values and based on it to execute the command, we can generally use the Switch command and for it, we will ask the user choice in the below script.There is another .Net method to create a user menu, we will see it after the example from the description mentioned above.a. Switch command methodFor the Switch command-based user selection, we will first display the message for the user and then give him a choice for the selection through Read-Host command as ...
Read MoreHow to get website SSL certificate validity dates with PowerShell?
SSL certificates are a very crucial part of the website. They play a key role in securing the exchange of information on both client and server sides by activating an HTTPS secure connection. In the below article with the PowerShell, we will get the certificate validity date (starting and expiry date) for the certificate using PowerShell.To achieve this, we need to make httpwebrequest but before that, we will ignore SSL warning by the below command.[Net.ServicePointManager]::ServerCertificateValidationCallback = { $true }And then we wil make the HTTP web request by calling a .Net class.$url = "https://www.microsoft.com/" $req = [Net.HttpWebRequest]::Create($url)When we check the ...
Read MoreExplain Try/Catch/Finally block in PowerShell
Try/Catch block in PowerShell is to handle the errors which are produced in the script. To be specific, the errors should be terminating errors. The Finally block in the PowerShell is not mandatory to write each time along with Try/Catch but it will be executed regardless the error occurs or not.So when you use the Try block, the Catch block is mandatory but not Finally block.Try/Catch block with Terminating error − Below is the example of Terminating error without finally block.Exampletry{ This is not allowed "This is Allowed" } catch{ Write-Host "Error occured" -BackgroundColor DarkRed }OutputPS C:\WINDOWS\system32> ...
Read MoreHow to use the ErrorActionPreference variable in PowerShell?
ErrorActionPreference variable in PowerShell is to control the non-terminating errors by converting them to terminating errors. Error handling depends upon which value you assign to $ErrorActionPreference variable.The values are as below.Continue − This is the default value of the variable and when the error occurs, an error is displayed in the PowerShell console, and the script continues the execution.Get-WmiObject -Class Win32_Logicaldisk -ComputerName Nonexist Write-Host "Hello World"Output Get-WmiObject -Class Win32_Logicaldisk -ComputerName Nonexist Write-Host "Hello World" Get-WmiObject : The RPC server is unavailable. At line:2 char:1 + Get-WmiObject -Class Win32_Logicaldisk -ComputerName Nonexist + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], COMException + FullyQualifiedErrorId ...
Read MoreWhat is terminating and non-terminating errors in PowerShell?
Powershell generates two types of errors when it executes script or commands. Terminating errors and Non-Terminating errors.Terminating error − This error generated by script, functions, or commands you create and it stops or halts the execution of the script so that the commands in the next lines can’t be executed. To handle this error proper mechanism is needed otherwise there would be an error message displayed.For example, PS C:\WINDOWS\system32>> This-commandnotexist This-commandnotexist : The term 'This-commandnotexist' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path ...
Read MoreWhat is use of $error variable in PowerShell?
Error variable in PowerShell is to view the errors generated in the current PowerShell session. We can say that the $Error variable is the container that stores all the errors and the latest error will be displayed first. For the example below, we will set the $Errorview to Category view to minimizing the error display content. By default $ErrorView is a Normal view.$ErrorView = "Categoryview"Now we will see the $error variable example, PS C:\WINDOWS\system32> asdds ObjectNotFound: (asdds:String) [], CommandNotFoundException PS C:\WINDOWS\system32> Get-process asddsd ObjectNotFound: (asddsd:String) [Get-Process], ProcessCommandExceptionHere, there is one wrong command and one wrong input we have written so ...
Read MoreWhat is the use of $Lastexitcode and $? Variable in PowerShell?
$LastExitCode in Powershell is the number that represents the exit code/error level of the last script or application executed and $? (Dollar hook) also represents the success or the failure of the last command. In general, both represent the same but the output method is different. The first command output is in the Number format (0 and 1) and the latter command is for Boolean (True or False) output.For example, PS C:\WINDOWS\system32> $LASTEXITCODE 0 PS C:\WINDOWS\system32> $? TrueAs you see the output, 0 represents the success status of the $LastExitCode command and $True for the $?.Now if the command doesn’t ...
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