April 2012 - The Lonely Administrator - PowerShell.com – PowerShell Scripts, Tips, Forums, and Resources

Friday Fun: 13 More Scriptblocks

In celebration of Friday the 13th I thought I would offer up a menu of 13 more script blocks. If you missed the first course, you can find the original 13 scrptblocks here. I’m not going to spend a lot … Continue reading → Read More...

Published Fri, Apr 13 2012 9:34 AM by The Lonely Administrator

Filed under: Scripting, WMI, PowerShell, Friday Fun, FridayFun, ScriptBlock, Random, ACL, password

Friday Fun: Get Next Available Drive Letter

A few days ago I saw on question, I think on Facebook, about using PowerShell to find the next available drive letter that could be used for mapping a network drive. Before I show you my approach, let me state … Continue reading → Read More...

Published Fri, Apr 06 2012 9:30 AM by The Lonely Administrator

Filed under: Scripting, WMI, PowerShell, Friday Fun, FridayFun, Array

Create an HTML PowerShell Help Page

Yesterday I posted an article about getting the online url for a cmdlet help topic. Today I want to demonstrate how we might take advantage of this piece of information. Since the link is already in the form of a … Continue reading → Read...

Published Tue, Apr 03 2012 12:12 PM by The Lonely Administrator

Filed under: Scripting, PowerShell, Function, ConvertTo-HTML, Get-Command, Help, cmdlet, HTML, Get-Help

Skipping WMI System Properties in PowerShell

One of my favorite techniques when using WMI in PowerShell is to pipe an object to Select-Object and select all properties. Try this: get-wmiobject win32_bios | select * It works, but it also gets all of the system properties like … Continue...

Published Wed, Apr 25 2012 8:15 AM by The Lonely Administrator

Filed under: Scripting, WMI, PowerShell, ScriptBlock, Get-WMIObject

PowerShell Scripting with [ValidatePattern]

I’ve been writing about a number of parameters attributes you can include in your PowerShell scripting to validate parameter values. Today I want to cover using a regular expression pattern to validate a parameter value. I’m going to assume...

Published Thu, Apr 19 2012 9:20 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, PowerShell v2.0, Regular Expressions, Validation

PowerShell Scripting with [ValidateLength]

In continuing the exploration of parameter validation attributes, today we’ll look at [ValidateLength()]. You can use this attribute in your PowerShell scripting to validate that a parameter value is at least a certain length and no more and a certain...

Published Fri, Apr 20 2012 11:11 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, parameter, Validation

PowerShell Scripting with [ValidateScript]

The last few days we’ve been looking at parameter validation attributes you might use in a script of function. Yesterday I wrote about [ValidateRange] and demonstrated how you might use it. That attribute works fine for any values that can …...

Published Thu, Apr 12 2012 8:57 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, ScriptBlock, parameter, Validation

Pipeline Power

Last week I came across a blog post that had a decent example using PowerShell and PowerCLI to get the disk location for all virtual machines. The posted code works and does display the information you might be after. $myVMs … Continue reading →...

Published Wed, Apr 04 2012 1:57 PM by The Lonely Administrator

Filed under: Scripting, PowerShell, PowerCLI, Pipeline, objects, ForEach, VMware, PowerCIi

PowerShell Scripting with [ValidateRange]

After my post yesterday on using the ValidateScript attribute with PSCredentials, I thought you might find it helpful to have a brief discussion on some other parameter validation attributes such as [ValidateRange()]. You can use this attribute if you...

Published Wed, Apr 11 2012 11:01 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, parameter, ValidateRange

Friday Fun: PowerShell Countdown

Recently, Josh Atwell posted a PowerShell script that performed a countdown. Naturally, I was inspired and did the whole “embrace and extend” thing. Don’t get me wrong: Josh’s script is perfectly fine. I saw some opportunities...

Published Fri, Apr 27 2012 9:05 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, Friday Fun

PowerShell Scripting with [ValidateSet]

Today we’ll continue our exploration of the parameter validation attributes you can use in you PowerShell scripting. We’ve already looked at [ValidateRange] and [ValidateScript]. Another attribute you are likely to use is [ValidateSet()]....

Published Mon, Apr 16 2012 7:38 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, PowerShell v2.0, parameter, Validation

PowerShell Scripting with [ValidateCount]

Here’s another parameter validation attribute you might want to use in your PowerShell scripting and functions. If your parameter can take an array of values, you might want to limit that array to a certain size. For example, your parameter …...

Published Thu, Apr 26 2012 8:38 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, PowerShell v2.0, parameter, Validation

Scripting with PSCredential

I see this question often: how can I pass a parameter value for a PSCredential that might be a credential object or it might be a user name? In the past I’ve used code like this: begin { … Continue reading → Read More...

Published Tue, Apr 10 2012 9:40 AM by The Lonely Administrator

Filed under: functions, Scripting, WMI, PowerShell, ScriptBlock, PSCredential, security

Try and Catch Me If You Can

In looking at entries in this year’s Scripting Games, as well as posts I see in PowerShell forums, I thought I’d post a short guide to properly using Try/Catch. This is the way I think it should be used. Let’s … Continue reading...

Published Thu, Apr 05 2012 8:24 AM by The Lonely Administrator

Filed under: Scripting, PowerShell, ErrorHandling, TryCatch

Technorati Claim – ignore me

Pay no attention to this post. FZ8D4JAWU7Q3 Read More...

Published Thu, Apr 26 2012 7:10 PM by The Lonely Administrator

Filed under: PowerShell

April 2012 - The Lonely Administrator

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