September 23, 2020

PowerShell Core v7.1.0-preview.7 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 v7.1.0-preview.7

Breaking Changes

  • Fix $? to not be $false when native command writes to stderr (#13395)

Engine Updates and Fixes

  • Initial work of the subsystem plugin model (for minimal powershell) (#13186)
  • Optimize GetSystemLockdownPolicy for non-lockdown scenarios (#13438)

General Cmdlet Updates and Fixes

  • Revert “Add the parameter -Paged to Get-Help to support paging (#13374)” (#13519)
  • Add support for TLS 1.3 in Web cmdlets (#13409) (Thanks @iSazonov!)
  • Add null check for args in CommandLineParser (#13451) (Thanks @iSazonov!)
  • Process reparse points for Microsoft Store applications (#13481) (Thanks @iSazonov!)
  • Move PSNullConditionalOperators feature out of experimental (#13529)
  • Move PSNativePSPathResolution feature out of Experimental (#13522)
  • Use field if property does not exist for ObRoot when using PowerShell Direct to container (#13375) (Thanks @hemisphera!)
  • Suppress UTF-7 obsolete warnings (#13484)
  • Avoid multiple enumerations of an IEnumerable<Expression> instance in Compiler.cs (#13491)
  • Change Add-Type -OutputType to not support ConsoleApplication and WindowsApplication (#13440)
  • Create warnings when UTF-7 is specified as an encoding (#13430)

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