For the latest info, see https://docs.microsoft.com/en-us/powershell/scripting/install/install-ubuntu
apt install wget apt-transport-https software-properties-common wget https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb dpkg -i packages-microsoft-prod.deb
Path Permission Error
If you get the following error whenever running a command - Error reading or writing history file. Its likely PowerShell was installed as root, but you're now running as a standard user, do the following...
sudo pwsh $refDir = Resolve-Path '~' $dstDir = Resolve-Path '~/.local/share/powershell' chown -R --reference=$refDir $dstDir exit
Above came from https://github.com/PowerShell/PowerShell/issues/10601
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