####################################################
#
# How To Install PowerShell Core On Ubuntu
#
# There are three options:
#    1) Snap package  
#    2) Direct .deb package install
#    3) Install from repository using apt
#
####################################################



################################
#  Snap Package Install
################################

# See https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell-core-on-linux

# Install PowerShell snap
sudo snap install powershell --classic

# Start PowerShell Core
pwsh
update-help 




################################
#  Direct DEB Package Install
################################

# Download latest DEB package:
https://github.com/PowerShell/PowerShell/releases

# Install with dpkg:
sudo dpkg -i powershell_X.X.X.X.ubuntu.XX.XX_amd64.deb
sudo apt-get install -f

# Start PowerShell and Update Help
pwsh
update-help





################################
#  Install from Repository
################################

# 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/17.04/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 and Update Help
pwsh
update-help

# Later, when there are updates to PSCore:
apt-get upgrade powershell






# Misc Notes:
# /usr/bin/pwsh is a link to /opt/microsoft/powershell/X.X.X/pwsh
# $PSHOME is /opt/microsoft/powershell/X.X.X/
# User profiles will be read from ~/.config/powershell/profile.ps1
# Default profiles will be read from $PSHOME/profile.ps1
# User modules will be read from ~/.local/share/powershell/Modules
# Shared modules will be read from /usr/local/share/powershell/Modules
# Default modules will be read from $PSHOME/Modules
# PSReadline history will be recorded to ~/.local/share/powershell/PSReadLine/ConsoleHost_history.txt