利用channel和go的exec包调用系统命令

package main

import (
	"bufio"
	"fmt"
	"os/exec"
)

func main() {
	cmd := exec.Command("ls", "-l")

	// Create a pipe to read the command's output
	stdout, err := cmd.StdoutPipe()
	if err != nil {
		panic(err)
	}

	// Start the command
	err = cmd.Start()
	if err != nil {
		panic(err)
	}

	// Create a channel to receive the lines of output
	outputChan := make(chan string)

	// Start a goroutine to read the command's output and send it to the channel
	go func() {
		scanner := bufio.NewScanner(stdout)
		for scanner.Scan() {
			outputChan <- scanner.Text()
		}
		if err := scanner.Err(); err != nil {
			panic(err)
		}

		// Close the channel to signal to the main goroutine that there is no more data to be received
		close(outputChan)
	}()

	// Process the lines of output as they are received on the channel
	for line := range outputChan {
		fmt.Println(line)
	}

	// Wait for the command to finish
	err = cmd.Wait()
	if err != nil {
		panic(err)
	}
}