Sat. Jan 18th, 2020

PowerShell Core v7.0.0 RC releases: PowerShell for every system

3 min read

PowerShell Core is a cross-platform (Windows, Linux, and macOS) automation and configuration tool/framework that works well with your existing tools and is optimized for dealing with structured data (e.g. JSON, CSV, XML, etc.), REST APIs, and object models. It includes a command-line shell, an associated scripting language and a framework for processing cmdlets.

PowerShell Core

What’s the difference between Windows PowerShell and PowerShell Core?

There are now two editions of PowerShell:

Windows PowerShell is the edition of PowerShell built on top of .NET Framework
(sometimes referred to as “FullCLR”):

  • This is the PowerShell that has been in widespread use for the last ~10 years.
  • Because of it’s dependency on the .NET Framework, Windows PowerShell is only available on Windows (hence the name).
  • The released versions of Windows PowerShell include 1.0, 2.0, 3.0, 4.0, 5.0, and 5.1.
  • Windows PowerShell is available as a built-in component in Windows client and Windows Server.
  • Windows PowerShell is launched as powershell.exe.
  • On Windows PowerShell 5.0/5.1, $PSVersionTable.PSEdition is set to Desktop.
  • Any usage of .NET-based functionality (e.g. C# cmdlets, Add-Type, and the invocation of static .NET Methods), relies on the .NET Framework runtime. This means Windows PowerShell’s .NET usage is limited to the functionality exposed by the .NET Framework and .NET Standard.
  • Continues to be supported via critical bug fixes in the newest releases of Windows and Windows Server

PowerShell Core is the edition of PowerShell built on top of .NET Core
(sometimes simplified to “CoreCLR”).

  • PowerShell Core is cross-platform, available on Windows, macOS, and Linux, thanks to the cross-platform nature of .NET Core.
  • PowerShell Core is launched as pwsh.exe on Windows and pwsh on macOS and Linux
  • On PowerShell Core, $PSVersionTable.PSEdition is set to Core.
    Note: while PowerShell Core 6.0 is cross-platform, there is also a PowerShell Core 5.0/5.1 released exclusively as part of Microsoft Nano Server.
  • Any usage of .NET-based functionality (e.g. C# cmdlets, Add-Type, and the invocation of static .NET Methods), relies on the .NET Core runtime. This means PowerShell Core is limited to the functionality exposed by .NET Core and .NET Standard.

PowerShell Core is officially supported on the following platforms:

  • Windows 7, 8.1, and 10
  • Windows Server 2008 R2, 2012 R2, 2016
  • Windows Server Semi-Annual Channel
  • Ubuntu 14.04, 16.04, and 17.04
  • Debian 8.7+, and 9
  • CentOS 7
  • Red Hat Enterprise Linux 7
  • OpenSUSE 42.2
  • Fedora 25, 26
  • macOS 10.12+

Our community has also contributed packages for the following platforms,
but they are not officially supported:

  • Arch Linux
  • Kali Linux
  • AppImage (works on multiple Linux platforms)

Changelog v7.0.0 RC

  • .NET Core 3.1 (LTS)
  • ForEach-Object -Parallel
  • Windows compatibility wrapper
  • New version notification
  • New error view and Get-Error cmdlet
  • Pipeline chain operators (&& and ||)
  • Ternary operator (a ? b : c)
  • Null assignment and coalescing operators (?? and ??=)
  • Cross-platform Invoke-DscResource (experimental)
  • Out-GridView-ShowWindow and other legacy GUI cmdlets are back on Windows
  • A ton of awesome quality-of-life improvements too numerous to list out here

Breaking Changes

  • Make update notification support LTS and default channels (#11132)

Engine Updates and Fixes

  • Improvements in breakpoint APIs for remote scenarios (#11312)
  • Fix PowerShell class definition leaking into another Runspace (#11273)
  • Fix a regression in formatting caused by the FirstOrDefault primitive added in 7.0.0-Preview1 (#11258)
  • Additional Microsoft Modules to track in PS7 Telemetry (#10751)
  • Make approved features non-experimental (#11303)
  • Update ConciseView to use TargetObject if applicable (#11075)
  • Fix NullReferenceException in CompletionCompleters public methods (#11274)
  • Fix apartment thread state check on non-Windows platforms (#11301)
  • Update setting PSModulePath to concatenate the process and machine environment variables (#11276)
  • Bump .NET Core to 3.1.0 (#11260)
  • Fix detection of $PSHOME in front of $env:PATH (#11141)