The Install-Package command is a part of the PackageManagement module in PowerShell, which allows users to discover, install, and manage software packages on Windows. This command is particularly useful for managing software from repositories like NuGet and Chocolatey directly from the command line.

Examples:

1. Installing a Package from NuGet:

   To install a package from the NuGet repository, you first need to ensure that the NuGet provider is available. You can do this by running:

   Get-PackageProvider -Name NuGet -ForceBootstrap

   Once the NuGet provider is available, you can install a package. For example, to install the Newtonsoft.Json package, use:

   Install-Package -Name Newtonsoft.Json -ProviderName NuGet

2. Installing a Package from Chocolatey:

   Chocolatey is another popular package manager for Windows. To use Chocolatey with PowerShell, you need to first install Chocolatey itself. Once installed, you can manage packages using choco commands or through PowerShell.

   First, ensure Chocolatey is installed:

   Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))

   After installing Chocolatey, you can use it to install packages. For example, to install Google Chrome, use:

   choco install googlechrome

3. Listing Installed Packages:

   To see all packages installed via Install-Package, you can use:

   Get-Package

4. Updating a Package:

   To update a package using Install-Package, use the -Update parameter. For example, to update the Newtonsoft.Json package, use:

   Install-Package -Name Newtonsoft.Json -ProviderName NuGet -Update

5. Uninstalling a Package:

   To uninstall a package, you can use the Uninstall-Package command. For example, to uninstall the Newtonsoft.Json package, use:

   Uninstall-Package -Name Newtonsoft.Json