To look at the contents of a file you can use the open command in Nushell.
But if we want to open a file with an associated application you must use the start command.
For example if you have an HTML file and use the open command you see the HTML source.
When you use the start command it opens the HTML file in your default browser.
You can also use the start command to open a directory in the file manager of your operating system.
If you use MacOS and type start . it will open the current directory in the Finder application.
When you use the start command followed by a URL it will open the URL in your default browser.
Written with Nushell 0.103.0.
