PowerShell provides a tremendous boon to productivity for computer professionals of all types. But, you have to admit: it can be a bit daunting to get up to speed! Indeed, as someone who has a fair amount of experience using it, I still find myself having to look up how to do things–frequently. So I […]
If you haven't taken a look at Tug, now's a great time. Eugene Bekker has been doing a ton of heavy lifting, taking my .NET Core proof-of-concept code and turning it into a formal ASP.NET MVC project.
You can certainly find a number of articles around that present PowerShell pitfalls that can easily trip you up if you are not careful. I took a different approach in my three-part series, A Plethora of PowerShell Pitfalls. The first two parts are presented in quiz format, together covering the top 10 “gotchas”. They will […]
Pipelining is an important concept in PowerShell. Though the idea did not originate with PowerShell (you can find it used decades earlier in Unix, for example), PowerShell does provide the unique advantage of being able to pipeline not just text, but first-class .NET objects. Pipelining has several advantages: It helps to conserve memory resources. Say […]
Sometimes, as a developer, you want to be be able to keep track of free space on a drive, the size of a log, the load on your CPU, the number of users logged in, etc. With PowerShell, it is typically just a matter of finding the right cmdlet amidst the large (and rapidly growing) […]
For those of you that have been at PowerShell Summits over the last few years you’ll have heard Jeffrey Snover state that he wanted to take PowerShell to other platforms. Now its happened Jeffrey has announced that an ALPHA release of PowerShell is now available for Linux and Mac. Currently available for Ubuntu, Centos, Red Hat […]
“To be or not to be”. Without getting into a debate over whether Shakespeare was musing about being a logician, suffice to say that in writing prose, the rules of when and how to use quotation marks are relatively clear. In PowerShell, not so much. Sure, there is an about_Quoting_Rules documentation page, and that is […]
So you’ve decided to write a bunch of commands to help automate the administration of ____. Awesome! Let’s try and make sure you get off on the right path, with this high-level overview of command design. Start with an inventory You’ll need to start by deciding what commands to write, and an inventory is often the best […]
Quick as you can, can you explain what each of these different parentheses-, brace-, and bracket-laden expressions does? ${save-items} ${C:tmp.txt} $($x=1;$y=2;$x;$y) (1,2,3 -join ‘*’) (8 + 4)/2 $hashTable.ContainsKey($x) @(1) @{abc=’hello’} {param($color=”red”); “color=$color”} $hash[‘blue’] [Regex]::Escape($x) [int]”5.2″ When you’re reading someone else’s PowerShell code, you will come across many of these constructs, and more. And you know […]
PowerShell 5 brought class based DSC Resources, which majorly simplifies the process of writing custom DSC resources. During my time working on some custom resources, I developed some tips a long the way which should save you some time and pain during your DSC journey. The tips cover: Structuring your class based DSC Resources Making it easier […]
By the time you are using PowerShell to automate an increasing amount of your system administration, database maintenance, or application-lifecycle work, you will likely come to the realization that PowerShell is indeed a first-class programming language and, as such, you need to treat it as such. That is, you need to do development in PowerShell […]
Long has it been known how to easily document your PowerShell source code simply by embedding properly formatted documentation comments right along side your code, making maintenance relatively painless… But if you advanced to writing your PowerShell cmdlets in C#, you have largely been on your own, either hand-crafting MAML files or using targeted […]