Questions tagged [powershell-4.0]

For topics and problems related specifically to Windows PowerShell 4.0. PowerShell 4.0 shipped with the releases of with Windows 8.1 and Windows 2012 R2. It is available as a download for Windows 7 SP1. For general PowerShell topics, use the `PowerShell` tag.

For general PowerShell information see the powershell tag wiki.

Description of PowerShell-v4.0

Windows PowerShell Microsoft's strategic task automation platform for Windows, and includes a command-line shell and scripting language. PowerShell was designed especially for system administrators.

PowerShell 4.0 ships with Windows 8.1 and Windows 2012 R2 as a built-in package.

Availability

PowerShell 4.0 is also available as a download for Windows 7 SP1. http://www.microsoft.com/en-us/download/details.aspx?id=40855

Notable New Features in 4.0

Windows PowerShell Desired State Configuration (DSC). See Windows PowerShell Desired State Configuration Overview
Where and ForEach Operators added to Collections. See Issue to add documentation for Where and ForEach operators
Several Scheduled Task CmdLet Improvements. See New Features in Windows PowerShell 4.0
Debugging Enhancements to support remote and workflow debugging.

Resources

A list of fetaures new and changed int Windows PowerShell is available here.

For latest news and development, check out the PowerShell blog

1951 questions

votes

4 answers

Error Handling for Invoke-RestMethod - Powershell

I have a powershell script using the Skytap API (REST). I would like to catch the error, if there is one, and try to display it. For example, we are changing the IP: Invoke-RestMethod -Uri…

asked Apr 13 '15 at 19:34

user01230

votes

2 answers

rename-item and override if filename exists

I am trying to use the Rename-Item cmdlet to do the following: I have folder which contains "*.txt" files. Let's say 1.txt, 2.txt etc... I want to copy files that have some prefix, rename them to *.txt and override any existing files if there are…

powershell powershell-4.0 foreach-loop-container

asked Aug 31 '15 at 12:58

Ilya Gurenko

votes

5 answers

PowerShell string default parameter value does not work as expected

#Requires -Version 2.0 [CmdletBinding()] Param( [Parameter()] [string] $MyParam = $null ) if($MyParam -eq $null) { Write-Host 'works' } else { Write-Host 'does not work' } Outputs "does not work" => looks like strings are converted from…

powershell powershell-4.0

asked Apr 07 '14 at 07:51

D.R.

20,268
21
102
205

votes

3 answers

Output the date/time in PowerShell

I want to output the date time in various places in my script for logging so I am doing this: $b = Get-Date Write-Output "Backups complete at $b" # more code here $c = Get-Date Write-Output "Backups complete at $c" I am having to use multiple…

powershell powershell-4.0

asked Jul 21 '16 at 20:30

ErocM

4,505
24
94
161

votes

5 answers

How to change tab width when converting to JSON in Powershell

I am creating a JSON in Powershell and I want to set a custom tab width when building it (instead of the default 4 white spaces I want to set only 2 white spaces). I am doing this because: the actual JSON (not the one presented in the below…

json powershell powershell-4.0

asked Oct 15 '15 at 09:54

Eduard Uta

2,477
5
26
36

votes

3 answers

Split a string with powershell to get the first and last element

If you do: git describe --long you get: 0.3.1-15-g3b885c5 Thats the meaning of the above string: Tag-CommitDistance-CommitId (http://git-scm.com/docs/git-describe) How would you split the string to get the first (Tag) and last (CommitId) element?

powershell powershell-4.0

asked Aug 19 '15 at 12:34

Elisabeth

20,496
52
200
321

votes

5 answers

How to run the .reg file using PowerShell?

I want to run the .reg file (registry file) using PowerShell Script but I am not able to run it. When i run it manually it creates the respective nodes in registry but i want it execute using powershell script. Below is the code which i tried using…

powershell automation powershell-3.0 powershell-4.0 powershell-5.0

asked Apr 05 '18 at 15:55

SRP

votes

2 answers

Loading Assemblies from NuGet Packages

Sometimes in my PowerShell scripts, I need access to a specific DLL, using Add-Type -AssemblyName. However, the DLLs I need aren't always on the machine or in the GAC. For instance, I might want a quick script that uses Dapper to query a database.…

powershell nuget-package powershell-4.0

asked Aug 31 '16 at 19:28

Travis Parks

8,435
12
52
85

votes

3 answers

PowerShell PSScriptRoot is null

When I run $PSScriptRoot it returns null. I am using PS version 4. $val = Join-Path -Path $PSScriptRoot WebPlatformInstaller_amd64_en-US.msi Error Join-Path : Cannot bind argument to parameter 'Path' because it is an empty string.

powershell powershell-4.0

asked Jun 10 '17 at 13:52

kumar

8,207
20
85
176

votes

4 answers

How to set the exit code when throwing an exception

MyScript.ps1: exit 1 MyThrow.ps1: throw "test" Execution in PowerShell: & ".\MyScript.ps1" Write-Host $LastExitCode # Outputs 1 Clear-Variable LastExitCode & ".\MyThrow.ps1" Write-Host $LastExitCode # Outputs nothing How do I set a proper exit…

powershell powershell-4.0

asked Feb 25 '15 at 16:31

D.R.

20,268
21
102
205

votes

3 answers

Find numbers after specific text in a string with RegEx

I have a multiline string like the following: 2012-15-08 07:04 Bla bla bla blup 2012-15-08 07:05 *** Error importing row no. 5: The import of this line failed because bla bla 2012-15-08 07:05 Another text that I don't want to search... 2012-15-08…

regex string powershell string-matching powershell-4.0

asked Jun 04 '15 at 08:47

Patric

2,789
9
33
60

votes

3 answers

Is the following possible in PowerShell: "Select-Object ."?

The scenario: I'm using Select-Object to access properties of a piped object, and one of those properties is itself an object. Let's call it PropertyObject. I want to access a property of that PropertyObject, say Property1. Is there any nice and…

powershell pipeline powershell-4.0

asked Apr 12 '15 at 22:44

Simon Elms

17,832
21
87
103

votes

1 answer

PowerShell XML SelectNodes fails to process XPath

I want to get a list of all project references in my csproj file using PowerShell. Currently I've the following approach: [xml]$csproj = Get-Content MyProject.csproj $refs = $csproj.SelectNodes("//ProjectReference") foreach($ref in $refs) { #…

xml powershell xpath powershell-4.0

asked Apr 15 '14 at 12:46

D.R.

20,268
21
102
205

votes

3 answers

Powershell Invoke-RestMethod Authorization Header

While invoking an Invoke-RestMethod using Powershell like: Invoke-RestMethod -Method Get -Uri "https://google.com/api/GetData" -Headers $headers and $headers being $headers = @{ Authorization="Secret $username $password" …

powershell authorization basic-authentication powershell-4.0 invoke-restmethod

asked Jan 15 '19 at 00:48

Reddipalle Nagarjun

votes

2 answers

How to check if an associative array is empty in powershell

$a = @() How do I check if $a above is empty (which it is). I would like to get $true as answer.

powershell hashtable powershell-4.0 is-empty

asked May 05 '16 at 19:03

Spencer E

2 3

…

99 100 Next