try VS cobra

"try" is not a prefix (like watch, nice, etc) uses an overlayfs in order to be able to see and accept or reject changes to your filesystem from a command

https://github.com/binpash/try

For any shell command where a minor mistake has the potential of ruining your day, take a look at “try”, which will allow you to inspect the effects before running it against a live system: https://github.com/binpash/try

he is not running a container, he is mounting an overlay file system for each root directory on the current system, then looking at what has been added as a new layer - that's what the command is supposed to add to the running system.

Pure genius.

See https://github.com/binpash/try/blob/b2df6b650cb2b58951563174...

We can use the flag with --date or -date, Go already does the automatic check. We can make our entire boilerplate with this approach, but let's make it a little easier and use the Cobra CLI package.

In this tutorial, we'll walk through the process of creating a simple command-line tool similar to curl using Go and Cobra, a CLI library for Go.

I use https://github.com/spf13/cobra religiously for this kind of thing - it handles all the annoying corner cases of parsing flags, and also has an intuitive notion of subcommands (with basic usage/help text generated) for picking which task you want to run with positional arguments.

We recently chose cobra[1] to create a cli application. It comes with so many best practices already packaged like autocompletions, help texts etc. etc.

[1]: https://github.com/spf13/cobra

github.com/spf13/cobra

I looked at the docs: https://cobra.dev/ ... and there are only examples on how to add new flags.

For installing Cobra-CLI you can go to Cobraor run go install github.com/spf13/cobra-cli@latest in the terminal.

In my build phase, I compile the source to create a k3sup binary and I also run the binary to generate shell script completions. Give kudos to this functionality which comes from spf13/cobra Go library for CLIs.

NWA is a command-line tool built on cobra. Here's an overview of NWA's commands: