Go library for Go CLI interaction.
General pattern is APPNAME VERB NOUN --ADJECTIVE
or APPNAME COMMAND ARG --FLAG
defined as
type Command struct {
Use string // The one-line usage message.
Short string // The short description shown in the 'help' output.
Long string // The long message shown in the 'help <this-command>' output.
Run func(cmd *Command, args []string) // Run runs the command.
}