Introduction

Helm, the package manager for Kubernetes, provides a convenient way to enable shell completion for its commands. The helm completion command generates shell completion scripts for various shells, facilitating a smoother user experience. In this article, we'll explore the helm completion command, its purpose, and how to use it effectively, accompanied by a practical example.

Understanding helm completion Command: The helm completion the command generates shell completion scripts for Helm commands. This feature assists users in completing command-line options, subcommands, and arguments when interacting with the Helm CLI, enhancing productivity and ease of use.

Generating Shell Completion Scripts: Let's generate a shell completion script for the Bash shell using the helm completion command.

Example:

$ helm completion bash > helm-completion.sh

Output: No output is displayed in the terminal. Instead, the generated completion script is saved to the file helm-completion.sh.

Applying Shell Completion: To apply shell completion for Helm commands in the current shell session, execute the generated script.

Example:

$ source helm-completion.sh

Interpreting the Output:

• Upon executing the helm completion command with the desired shell (e.g., bash), a completion script is generated and outputted to the terminal.

• By redirecting the output to a file (e.g., helm-completion.sh), the completion script is saved for future use.

Using Shell Completion: After applying the generated completion script to the shell session, users can benefit from auto-completion features when typing Helm commands, options, subcommands, and arguments. For instance, typing helm ins and pressing the Tab key will auto-complete to helm install, providing a list of available options and arguments.

Conclusion

The helm completion command is a valuable feature of the Helm CLI, enabling shell completion for improved usability and productivity. By generating and applying shell completion scripts, users can leverage auto-completion features when interacting with Helm commands, streamlining their workflow and reducing typing errors.