How to grab output when using ssh library in Golang

huangapple
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英文:

How to grab output when using ssh library in Golang

问题

我正在编写一个小项目来管理 Cisco 交换机，一切都很好，直到我需要从标准输出中获取输出。以下是我的代码。

  1. func Return_current_user(conn *ssh.Client) {
  2. 	session, err := conn.NewSession()
  3. 	if err != nil {
  4. 		log.Fatal("Failed to create session %v: ", err)
  5. 	}
  6. 	
  7. 	sdtin, _ := session.StdinPipe()
  8. 	session.Stdout = os.Stdout
  9. 	session.Stdin = os.Stdin
  10. 	session.Shell()
  12. 	cmds := []string{
  13. 		"conf t",
  14. 		"show users",
  15. 		
  16. 	}
  17. 	for _, cmd := range cmds {
  18. 		fmt.Fprintf(sdtin, "%s\n", cmd)
  19. 	}
  20. 	session.Wait()
  21. 	session.Close()
  22. }

这是我在屏幕上的输出：

  1. NAME     LINE         TIME         IDLE          PID COMMENT
  2. admin    pts/0        Aug 16 06:13 00:02       29059 (192.168.57.1)
  3. NAME     LINE         TIME         IDLE          PID COMMENT
  4. admin    pts/0        Aug 16 06:13 00:02       29059 (192.168.57.1)

我只能让远程命令的输出显示出来，但是我该如何将这些输出保存在另一个变量中以便将来处理。非常感谢。

英文:

I'm coding a small project to manage Cisco switch, It's all good until I need to grab output from Stout. Here is my code.

  1. func Return_current_user(conn *ssh.Client) {
  2. 	session, err := conn.NewSession()
  3. 	if err != nil {
  4. 		log.Fatal("Failed to create session %v: ", err)
  5. 	}
  6. 	
  7. 	sdtin, _ := session.StdinPipe()
  8. 	session.Stdout = os.Stdout
  9. 	session.Stdin = os.Stdin
  10. 	session.Shell()
  12. 	cmds := []string{
  13. 		"conf t",
  14. 		"show users",
  15. 		
  16. 	}
  17. 	for _, cmd := range cmds {
  18. 		fmt.Fprintf(sdtin, "%s\n", cmd)
  19. 	}
  20. 	session.Wait()
  21. 	session.Close()
  22. }

Here is my output in the screen:

  1. NAME     LINE         TIME         IDLE          PID COMMENT
  2. admin    pts/0        Aug 16 06:13 00:02       29059 (192.168.57.1)
  3. NAME     LINE         TIME         IDLE          PID COMMENT
  4. admin    pts/0        Aug 16 06:13 00:02       29059 (192.168.57.1)

I can only make the output of the remote command appear but How can I save those outputs in another variable to process in the future. Thank you very much.

答案1

得分: 1

不要用os.Stdout覆盖session.Stdout，后者只会将输出发送到控制台，而应该从session.StdoutPipe()返回的Reader中读取。

英文:

Don't override session.Stdout with os.Stdout, which will just send output to the console, but read from the Reader returned from session.StdoutPipe() instead.

huangapple
  • 本文由 发表于 2022年8月16日 14:38:34
  • 转载请务必保留本文链接：https://go.coder-hub.com/73369734.html
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