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Tag: hashtable

Friday Fun: Redacting with PowerShell

Posted on January 28, 2022January 28, 2022

It has been a while since my last Friday Fun post. These are articles that use PowerShell in fun and off-beat ways. The goal is to demonstrate techniques and concepts not necessarily give you something ready for production. Today, I’m going to modify PowerShell output to hide, or redact, potentially sensitive information. I might want…

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Testing PowerShell HashTables

Posted on January 14, 2016

So I’ve been watching the PowerShell Toolmaking Fundamentals course on Pluralsight authored by Adam Bertram.  You may be surprised that I watch other PowerShell related courses, but I always pick up something I didn’t know about, find a new teaching technique or something else that makes me say, “that was cool.” I have found a…

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Sorting Hash Tables

Posted on September 22, 2014

Over the weekend I received a nice comment from a reader who came across an old post of mine on turning an object into a hash table.  He wanted to add a comment but my blog closes comments after a period of time. But I thought it was worth sharing, especially for those of you…

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Convert Text to Object with PowerShell and Regular Expressions

Posted on February 10, 2014

A few weeks ago I was getting more familiar with named captures in regular expressions. With a named capture, you can give your matches meaningful names which makes it easier to access specific captures. The capture is done by prefixing your regular expression pattern with a name. PS C:\> “UNC is \\server01\public” -match “\\\\(?<servername>\w+)\\(?<sharename>\w+)” True…

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Friday Fun: Out-ConditionalColor

Posted on September 27, 2013October 23, 2015

Last week I posted a Friday Fun article on parsing results from Invoke-Webrequest and displaying matching strings in color so that the book titles I’m interested in stand out. But the more I thought about it I realized I should take this a step further. The problem with Write-Host is that it doesn’t write anything…

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Rename Hashtable Key Revised

Posted on January 24, 2013

Last week I posted an advanced PowerShell function to rename a hashtable key. As usual, the more I worked with it the more I realized it was missing something – namely the ability the take a pipelined object. My original version assumed you had saved the hashtable to a variable. But as I was working…

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Join PowerShell Hash Tables

Posted on January 23, 2013

I received a lot of feedback and interest in my ConvertTo-Hashtable function. One question I received was “Why?” Well, one reason might be that you want to combine two objects into a single object. Joining them as two hashtables makes this an easier process. First off, combining two hashtables is as simple as adding them…

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Convert PowerShell Object to Hashtable Revised

Posted on January 22, 2013September 22, 2014

A while back I posted an advanced PowerShell function that would take an object and convert it to a hashtable. The premise was simple enough: look at the incoming object with Get-Member to discover the property names then create a hashtable with each property name as a hashtable key. I’ve a need to use this…

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Rename Hashtable Key

Posted on January 16, 2013

I use hashtables quite a bit. Often generating hashtables on the fly from other sources. But sometimes the hashtable keys that come from these external sources don’t align with what I intend to do with the hashtable. For example, one of the nifty things you can do with hashtables is splat them against a cmdlet…

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Hyper-V ID Hash Table

Posted on January 3, 2013

In Hyper-V, one of the challenges (at least that I’ve run into) has to do with naming. In addition to a name, Hyper-V objects such as virtual machines, are identified with a GUID. Most of the VM-related PowerShell cmdlets will let you specify a virtual machine name. But sometimes you’ll run across the GUID and…

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Create PowerShell Scripts with a Single Command

Posted on December 5, 2012December 6, 2012

One of the drawbacks to using a PowerShell script or function is that you have to write it. For many IT Pros, especially those new to PowerShell, it can be difficult to know where to start. I think more people would write their own tools if there was an easy way to automatically write them….

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PowerShell Hyper-V Memory Report

Posted on November 1, 2012November 1, 2013

Since moving to Windows 8, I’ve continued exploring all the possibilities around Hyper-V on the client, especially using PowerShell. Because I’m trying to run as many virtual machines on my laptop as I can, memory considerations are paramount as I only have 8GB to work with. Actually less since I still have to run Windows…

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Export and Import Hash Tables

Posted on February 2, 2012

I use hash tables quite a bit and with the impending arrival of PowerShell 3.0 I expect even more so. PowerShell v3 allows you to define a hash table of default parameter values. I’m not going to to cover that feature specifically, but it made me realize I needed a better way to export a…

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Convert Text to Object

Posted on October 25, 2011September 13, 2013

Today I have another tool in my new battle regarding turning command line tools into PowerShell tools. The bottom line is we want to have objects written to the pipeline. At the PowerShell Deep Dive in Frankfurt there was a suggestion about providing tools to help with the transformation from CLI to PowerShell and this…

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Friday Fun Convert Object to Hash Table

Posted on October 21, 2011September 13, 2013

I’ve been working on a few PowerShell projects recently and one requirement I had was to turn an object into a hash table. I thought this was something that was already handled in PowerShell but I couldn’t find a cmdlet or an easy .NET technique. So I wrote my own function, ConvertTo-Hashtable. The function is…

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