PowerShell is a must have skill for a developer or system administrator working in the Microsoft ecosystem, but not only. With the release of the version 7 of PowerShell Core, the improvements and new features make more us more powerful to to what we need to be do for our clients.
The PowerShell team announced PowerShell 7 here. PowerShell 7 is now built on .NET Core 3 and brings back many APIs required by modules built on .NET Framework, so now they work with .NET Core runtime and PowerShell 7 ! This is a huge improvement for what we can do with PS.
Here is how you can install and update PowerShell Core 7 on Windows and Linux (preview) from officiel documentation :
- Installing PowerShell Core on Windows
- Installing PowerShell Core on Linux
- Installing PowerShell Core on macOS
- Installing PowerShell Core on ARM
Windows 10 install
1. On Windows 10, you can execute this simple command line to install PS Core 7 with a PS instance (with administrator rights) :
iex « & { $(irm https://aka.ms/install-powershell.ps1) } –UseMSI -Quiet »
Note : If you install a previous version of PowerShell Core (PS6 for example) and you use –Quiet option, it will fail to install PS7. In that case, remove the –Quiet option and follow the installer UI instructions.
2. To launch a PSC7 instance, either right click in a directory ‘PowerShell 7 > Open here’ or just type ‘pwsh’ :
Linux install
PowerShell 7 supports the following operating systems on x64, including:
- Windows 7, 8.1, and 10
- Windows Server 2008 R2, 2012, 2012 R2, 2016, and 2019
- macOS 10.13+
- Red Hat Enterprise Linux (RHEL) / CentOS 7+
- Fedora 29+
- Debian 9+
- Ubuntu 16.04+
- openSUSE 15+
- Alpine Linux 3.8+
Note : latest version 19.10 is not supported :
1. In a bash terminal, just execute the following command line :
wget https://aka.ms/install-powershell.sh; sudo bash install-powershell.sh; rm install-powershell.sh
2. To launch a PSC7 instance in the bash just type ‘pwsh’ :
PS 7 works fine even on a low Memory/CPU computer 
For Linux, you can see the documentation here : https://docs.microsoft.com/fr-fr/powershell/scripting/install/installing-powershell-core-on-linux?view=powershell-7.