fission app command and its subcommands to work with apps. The main operations are registering an app, publishing an app, and displaying information about an app.fission app register command initializes a new app and links it to your Fission account.fission app register and suggest it. You accept the suggestion or enter another build directory as a relative path from the fission.yaml file.fission.yaml configuration file with a list of files to ignore, a URL where your app will be viewable after it is published, and a build directory. See the Fission YAML guide for more information about the fission.yaml file.fission app register command has advanced options:fission app publish command to publish your app to the web. Run this command from the directory that contains your app's fission.yaml configuration file.fission app publish command publishes your app and associates it with the URL in the fission.yaml file. After your app is published, the Fission CLI will output a success message and the URL for your app.fission up command is a shortcut for fission app publish.fission app publish command has advanced options:--watch option. The Fission CLI will watch your build directory and publish whenever it detects a change.fission app info to display the URL where your app is viewable.