Invoke-Expression takes any string and treats it as PowerShell code. This way, you could construct dynamic code, and then execute it....
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Accessing Web Page Content
Beginning with PowerShell 3.0, the cmdlet Invoke-WebRequest can download web page content quite easily. This would scrape all links from...
Analyzing svchost Processes
Occasionally, you may see a bunch of processes named "svchost" in your task monitor or Get-Process output. These processes are hosts for Windows...
Identifying Services by ProcessID
Group-Object is a great cmdlet to create lookup tables. If you wanted to identify a Windows service by its process ID, here is a way: $serviceList =...
Creating Real Classes
PowerShell introduces class support in PowerShell 5.0, but you can define your own classes in other PowerShell versions as well. Simply use C# code...
Adding Test Hosts to PowerShell ISE
To quickly open new test hosts inside the PowerShell ISE that ships with PowerShell 3.0 and better, here is a small helper function: #requires...
Using PowerShell Tabs in the PowerShell ISE
The PowerShell ISE shipping with PowerShell 3.0 and better is actually a multi-host. It can host multiple separate instances of PowerShell. To add a...
Defining Default Parameters
PowerShell can define defaults for any parameter, so if you wanted to always submit a default value for Get-ChildItem‘s –Path parameter,...
Outputting and Assigning at the Same Time
If you’d like to assign the results of a command to a variable, and at the same time output the results, too, here are two approaches. You can...
Common Parameters and Optional Common Parameters
Cmdlets and advanced PowerShell functions can have their own parameters, but they also always inherit common parameters. To see a list of common...
Displaying Object Properties One per Line
Sometimes you may want to get a good overview of the data contained in an object. For example, if you query the PowerShell process and display it in...
Listing (and Checking) PowerShell Profiles
Profile scripts are PowerShell scripts that launch automatically once PowerShell starts. The path to the primary profile file can be found in...