The command-not-found module is a feedback provider plugin for PowerShell. This feedback provider depends on the command-not-found utility, which is often available on Linux by default, to provide suggestions when a native command cannot be found.

bash also calls the command-not-found utility to provide suggestions when a command cannot be found. But this feedback provider plugin does more than that, thanks to the command-line predictor feature in PowerShell. It also implements the ICommandPredictor interface and serves as a predictor. When the resulted feedback contains actionable items, such as commands to run, they will be used as predictive suggestions to streamline the user's command-line experience.

The command-not-found plugin is built on the IFeedbackProvider interface, which is available with PowerShell 7.4.0-preview.2 or above. To display prediction suggestions from the command-not-found, you need PSReadLine 2.2.6 or above.

• PowerShell 7.4.0-preview.2 or above
• PSReadLine 2.2.6 or above

PowerShell feedback providers and predictors are written in C# and registered with the PowerShell Subsystem Plugin Model. To learn more, see "How to create a feedback provider" and "How to create a command-line predictor".

Make sure the latest .NET 8 SDK is installed and available in your PATH environment variable. Run .\build.ps1 from pwsh to build the project. The module will be published to .\bin\command-not-found by a successful build.