posts-powershell

If you ever needed a tool to find out the type of file system for any drive, take a look at this simple PowerShell function: function...

Sometimes, you need to call commands that require interactive input to work. For example, to find out existing drives with DiskPart, you would have...

In a previous tip, you learned how Select-String can filter string arrays based on a keyword. Have a look: route print | Select-String 127.0.0.1...

PowerShell captures any output from any command you enter. This is why you can always store command results in a variable, even with native...

Select-String can automatically search entire folders and scan all file contents for specific key words. All you do is to provide a path to scan,...

Select-String is a fun cmdlet. Whenever a command returns string data, Select-String filters out text that does not contain a specific keyword. For...

Sometimes you'd like to wait for a key press. The easiest way is to use Read-Host like this: Read-Host 'Please press ENTER' | Out-Null...

Sometimes, you may want to store information you gathered in different places into one single object and return this object to the caller. This is...

If you use a notebook and are on the road often, you may want a way to check the battery status so you can shut down your stuff in time. Here is a...

PowerShell is a dynamic language, and as Forest Gump put it, you never know what you get. For example, when you try and figure out the battery...

With New-Item, it is easy to create new registry keys: New-Item HKCU:SoftwareTestkey New-Item can only create one key at a time and fails if the...

With New-PSDrive, you can create new virtual PowerShell drives to locations you often visit. New-PSDrive needs three pieces of information: the name...

Cmdlets and Functions most of the time support one or more parameters. Let's take this simple function. It defines two parameters called number and...

The family of Format-... Cmdlets is useful for outputting data into the console. You probably often used lines like this: Get-Service | Format-Table...

Switch parameters work like a switch, so they are either "on" or "off" aka $true or $false. To add a switch parameter to a...

PowerShell supports many different command categories and searches for the command in the following order: 1. Alias 2. Function 3. Cmdlet 4....

Alias names are a good way of making commands more accessible. The following line would enable you to quickly launch Internet Explorer by entering...

To find out all alias names associated with a given command, filter the alias list by its definition property. The following command lists all...

If you want to launch a script file or executable, in PowerShell, you'll need to specify either a relative or absolute pathname. To do so by...

If you have to batch-process tons of file names, you may want to make sure all file names are legal and automatically remove all illegal characters....

You can always strip all illegal characters from the path If you have no time to review path names and correct them manually to see if they...

While raw .NET calls provides you with granular control over how to validate paths and file names, there is a cmdlet called Test-Path for simple...

File names may not contain certain characters because they are illegal and cannot be processed by Windows. First, let's find out which...

Paths may not contain certain characters because they are illegal and cannot be processed by Windows. First, let's find out which characters are...

Whenever the built-in Split-Path cmdlet isn't enough, you can always resort to the real .NET class behind it. This class is called...

PowerShell comes with the Split-Path cmdlet, which helps you disassemble paths and find the interesting information. Take a look: Split-Path...

If you have ever written scripts using VBScript and now are trying to migrate them to PowerShell, you may miss a lot of useful commands not...

Strings represent text information and consist of individual characters. By casting, you can convert strings to individual characters and these into...

PowerShell uses .NET objects everywhere. Anything is represented as .NET object, and .NET objects come with useful built-in methods. However, for...

In a previous tip, you learned how to call an external VBScript from PowerShell and read back any text VBScript returned. We will now take a look at...