# Install PowerShell
sudo snap install powershell --classic
# Or refer to following official link for further options. (I followed installation via package repository for Ubuntu 20.04)
# https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell-core-on-linux?view=powershell-7.1#installation-via-package-repository---ubuntu-2004

# install NTLM dependency
sudo apt install gss-ntlmssp

# Start PowerShell
sudo pwsh

# Install WSMan
Install-Module -Name PSWSMan
Install-WSMan

# Restart your PowerShell session to enable it in PowerShell
exit
sudo pwsh