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Virtual Geek

Tales from real IT system administrators world and non-production environment

Blog posts : "Powershell"

Powershell adding leading zeros to string or int

I was working on a script project where I wanted to create and defined names for multiple virtual machine in the series, with maintaining length of the string of names with numbers adding leading zeros, Below -f format operator one-liner command helps me to create the list.

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Powershell Dell iDrac redfish Rest API basic authentication

In one of my blog Configure Dell iDrac9 Rest API with Powershell I showed how use x-auth-token to connect to Dell iDrac, here I instead of token, using basic authentication (use UserName and Password each time to connect to Redfish iDRAC rest api), This is just a example and I will be using expli…

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Powershell web scrapping extract table from html

This is small script I use to collect the table data from website to Powershell Object and then further it can be saved to csv file. For this example I am taking table example from https://datatables.net. I will try to convert table to Powershell Object. HTML tables has tags th (Table header) and …

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PowerShell slice array into groups of smaller arrays

This is a small script to slice array into groups of smaller array, and I use it in my scripts most often. This script is very helpful when I want to batch process multiple server at time but not on all the server, instead fewer servers at servers in batch. Once I have a very big fat list of servers…

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Powershell Convert range of numbers into another list of numbers maintaining ratio

Recently I was working on some PowerShell GUI project, Where I wanted to convert a range of number into another range of number maintaining ratio, for this I had to use one Arithmetic Math formula and, for example I have numbers between 1 to 200, Which I wanted to fit into new number of range bet…

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Powershell Find application window state minimized or maximized

While working on one of the small freelance project there was a requirement to find whether launched application/process is minimized or maximized (For example when I open Microsoft excel what is the state whether it is minimized or maximized). This value of window state you can easily get with UIAu…

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Configure Dell iDrac9 Rest API with Powershell

After writing  2 articles related on HPE ILO rest api, I had to automate Dell iDRAC9 systems using powershell. Dell iDRAC9 rest API is based on Redfish resources. HPE ILO5 also uses redfish for APIs but the resources and parameter usage are somewhat totally different, So  I wrote Dell iDRAC codes fr…

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Powershell Configure ILO5 using Restful API

This is second part of PowerShell HPE ILO4 Rest API automation examples. In earlier part I shown how to use Rest API on ILO version 4. But the same API didn't work on ILO5 for me, After verifying document for ILO5, I found it uses RedFish rest api.

What is Redfish? 
DMTF's Redfish® is a sta…

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PowerShell HPE ILO4 Rest API automation examples

Using Microsoft PowerShell to consume and automate any Restful API is very easy. In my earlier article I showed how to automate VMware product to automation rest api - Powershell Using vRealize Log Insight Rest API. In this article I am using HPE ILO4 Rest API to write automation scripts and how …

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Powershell Using vRealize Log Insight Rest API

I had an assignment to automate vRLI (VMware vRealize Log Insight) using Powershell as well as Ansible. Here in this article I am showing how to use Microsoft Powershell to automate vRLI configurations. The best part about vRLI is, it provides Rest API which you can easily consume with any scripting…

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Powershell New-Object Retrieving the COM class factory for component with CLSID 80040154 Class not registered (Exception from HRESULT 0x80040154 (REGDB_E_CLASSNOTREG))

I was trying to use PowerShell object InternetExplorer.Application for automation purpose, While running my Powershell scripts on my VMs, I was receiving below error. To troubleshoot further I tested other Microsoft object for example: Excel.Application and Outlook.Application. Still I was recei…

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Powershell Write-Eventlog The source name test does not exist on computer localhost

I was writing one GUI program on Microsoft Powershell, One of the requirement was logs (Information, Warnings and Errors) must be written under Event Log - Event Viewer, So troubleshooting or information viewing for program operations is easy and everything is logged properly. To fulfill the task th…

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PowerShell Invoke-WebRequest The underlying connection was closed: Could not establish trust relationship for the SSL TLS secure channel.

I face below error frequently whenever try to automate a website running self signed or invalid certificate, Here is my lab vCenter server for demo which is using self signed SSL certificate. This causes my script to fail whenever using Invoke-WebRequest to automate website. You can trust the cer…

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PowerShell Invoke-WebRequest The request was aborted Could not create SSL TLS secure channel

I was testing automating few banking websites to check uptime, Invoke-WebRequest is use to access webiste, using this command I wrote a script to access bank website with PowerShell commands, but while executing scripts it was failing to access web site and showing below error.

Invoke-We…

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PowerShell Convert MAC address to Link-Local IPv6 address

I received one query on one of the chat group I am part of asking if there is a way to convert MAC physical address to Link-Local IPV6 address using PowerShell, Infact I had worked on the same kind project of migrating from IPv4 to IPv6 and already written it long bank. Lets see what is the formula …

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How to sign PowerShell ps1 scripts

By reading the article subject first question rose to the mind why you should sign PowerShell scripts? The answer is whenever we download powershell script or we receive it from another users, The digital signature allows the user to confirm the validity of the certificate used to sign the script.…

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Creating an internal PowerShell module repository

I was at client location and online Microsoft PSGallery was blocked as per company security policy, They wanted to only allow to use local respository which will only have tested and verified PowerShell modules. For this we suggested to configure a solution local PowerShell repository. In the Micros…

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Invoke-WebRequest : The underlying connection was closed: An unexpected error occurred on a send

I was setting up a local on premises PSRepository server for collaboration purpose between my team also future planning is to limit users downloading modules from only from in-house PowerShell repositories. Local repository was setup but while publishing module on the repository I was getting below …

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Get-PSRepository WARNING Unable to find module repositories

I was at one of my client's location and setting up PowerShell enviroment. I was trying to download few PowerShell modules from online PSGallery with below commands, while received the errors. After trying find and install PowerShell module with required parameters, in both the error outputs it was …

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PowerShell WPF before and after image slider

While doing a PowerShell GUI project for a one of my client, they wanted to use one of the WPF control – GridSplitter, in such a way that it will switch or show different images while sliding GridSplitter. This cool effect can be easily achieved by using WPF bindings. I am using horizontal grid spli…

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