open-im-server/cmd/imctl/imctl.go

package main

import (
	"flag"
	"fmt"
	"os"
	// Add other necessary packages here
)

func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: imctl [command] [options]\n")
		fmt.Fprintf(os.Stderr, "Commands:\n")
		// Add sub-commands and their descriptions here
		fmt.Fprintf(os.Stderr, "\nOptions:\n")
		// Add options and their descriptions here
	}

	// Define flags and options for each sub-command
	// Set default values and usage messages for each flag and option

	flag.Parse()

	if flag.NArg() < 1 {
		flag.Usage()
		os.Exit(1)
	}

	command := flag.Arg(0)

	switch command {
	case "user":
		// Call function to handle user management sub-command
	case "monitor":
		// Call function to handle system monitoring sub-command
	case "debug":
		// Call function to handle debugging sub-command
	case "config":
		// Call function to handle configuration sub-command
	default:
		fmt.Fprintf(os.Stderr, "Unknown command: %s\n", command)
		flag.Usage()
		os.Exit(1)
	}
}