How do I install PowerShell?

As of February 2017, Microsoft has made these available though a public repository which brings all the repository goodness. Details here.

Here are the instructions to install the latest version of PowerShell on 16.04.

# Import the public repository GPG keys
curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -

# Register the Microsoft Ubuntu repository
curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list | sudo tee /etc/apt/sources.list.d/microsoft.list

# Update the list of products
sudo apt-get update

# Install PowerShell
sudo apt-get install -y powershell

# Start PowerShell (MS renamed main executable at launch to be more Linux-like)
pwsh

For debian install files ('.deb') and other downloads, see PowerShell releases on GitHub.

Direct download links, with SHA256 hashes:

• 14.04: powershell_6.0.0-alpha.16-1ubuntu1.14.04.1_amd64.deb

  FB0002D6D57D900D0BA16C13C4EB0B84CA9D1AEA5EAF4DDBC0F7E8F3D582A2DF
  

• 16.04: powershell_6.0.0-alpha.16-1ubuntu1.16.04.1_amd64.deb

  96A647EFA64C704958CEAFA89F319950A3B729C161CB77C286561AF3CD3BFC1E
  

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Download the DEB, verify the checksum, and then let Ubuntu Software Center take care of installing it. See help.ubuntu.com on how to verify the download. Basically, enter the following command:

sha256sum powershell_*.deb

Ubuntu 14.04 and later

PowerShell can be installed as a snap package in all currently supported versions of Ubuntu. To install the PowerShell snap package open the terminal and type:

sudo snap install powershell --classic

To start PowerShell from the terminal type:

snap run powershell