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Software & Coding Articles
Page 48 of 83
How to validate the IP address using PowerShell?
To validate the IP address using PowerShell, we can use several methods as shown below.Using RegEx method.Using Typecasting method.Using TypeCasting method.In this method, we are using System.Net method class IPAddress to validate the IP address.[ipaddress]$IP = "192.168.0.1"The above one is valid. Let’s check what $IP stores in.PS C:\> $IP Address : 16820416 AddressFamily : InterNetwork ScopeId : IsIPv6Multicast : False IsIPv6LinkLocal : False IsIPv6SiteLocal : False IsIPv6Teredo : False IsIPv4MappedToIPv6 : False IPAddressToString : 192.168.0.1The above one is Ipv4 and this method also works for IPv6. See the example below.PS C:\> [ipaddress]"2001:0db8:85a3:0000:0000:8a2e:0370:7334" Address : AddressFamily : InterNetworkV6 ScopeId ...
Read MoreHow to check if the string contains the specific word?
To check if the PowerShell string contains a specific word, we can use the string method Contains(). For example, ExamplePS C:\> $str = 'TestNZ01LT' PS C:\> $str.Contains('NZ') TrueNow the funny thing is, even if the PowerShell is case-Insensitive, the above command is not. We need to provide the exact substring. For example, the below output will be false.ExamplePS C:\> $str.Contains('Nz') FalseTo overcome this problem, we can either provide the same search name in the method or we need to use the lowercase or uppercase method if you don’t want the search case-sensitive.PS C:\> $str = 'TestNZ01LT' PS C:\> ($str.ToLower()).Contains(('Nz').ToLower()) True ...
Read MoreHow to convert command output to the Hashtable format in PowerShell?
To convert any command output to the hashtable in PowerShell, we can first convert the output to the JSON format using the ConvertTo-JSON command, and applying the ConvertFrom-JSON command from the first output will produce an output to the Hashtable.ExampleGet-ServiceThe above command will give the output in the array format.OutputStatus Name DisplayName ------ ---- ----------- Stopped WwanSvc WWAN AutoConfig Stopped XblAuthManager Xbox Live Auth Manager Stopped XblGameSave Xbox Live Game Save Stopped XboxGipSvc Xbox Accessory Management Service Stopped XboxNetApiSvc Xbox Live ...
Read MoreHow to exclude the RunSpaceID property from the Invoke-Command output in PowerShell?
When we write Invoke-Command in PowerShell, sometimes we get the RunSpaceID property in PowerShell. This is because we use Select-Object (alias: Select) command inside the scriptblock. For example,ExampleInvoke-Command -ComputerName LabMachine2k12 -ScriptBlock{Get-Process PowerShell | Select Name, CPU, WorkingSet}OutputName : powershell CPU : 9.1572587 WorkingSet : 127700992 PSComputerName : LabMachine2k12 RunspaceId : c690f205-06d4-4cc4-be29-5302725eadf1To avoid getting the RunSpaceID property in the output, use the Select command output the scriptblock. For example,ExampleInvoke-Command -ComputerName LabMachine2k12 -ScriptBlock{Get-Process PowerShell} | Select Name, CPU, WorkingSetOutputName CPU WorkingSet ---- --- ---------- powershell 9.1572587 127700992
Read MoreHow to exclude PSComputerName property from Invoke-Command output in PowerShell?
When we are working with Invoke-Command, we get the PSComputerName extra field in the output table. You can remove it by using -HideComputerName parameter. For example, the Below command gives the output with the PSComputerName property.ExampleInvoke-Command -ComputerName LabMachine2k12 -ScriptBlock{Get-Service Winrm} | ft -AutoSizeOutputStatus Name DisplayName PSComputerName ------ ---- ----------- -------------- Running Winrm Windows Remote Management (WS-Management) LabMachine2k12To hide the PSComputerName property,ExampleInvoke-Command -ComputerName LabMachine2k12 -ScriptBlock{Get-Service Winrm} -HideComputerNameOutputStatus Name DisplayName ------ ---- ----------- Running Winrm Windows Remote Management (WS-Management)
Read MoreHow to get the Windows certificate details using PowerShell?
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 MoreHow to check if PSCustomObject is empty in PowerShell?
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 MoreHow to delete all the file contents using PowerShell?
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 MoreHow to get installed windows update using PowerShell?
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 MoreDifference between Test-Path and Resolve-Path in PowerShell?
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 ...
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