go exec：exit status 64

Continuing from the previous article , I found a way to check the number of unread emails. I need to use go to execute the doveadm command, so I consider using the go exec package.

But after the code is written, it keeps reporting an error: exit status 64, which means the option is wrong, but obviously all options are ok, so it is only possible that I am using the go exec package in the wrong way. Finally, after various attempts, I found that in go exec, All parameters of the command need to be filled in separately.

 1 package main
 2 
 3 import (
 4     "bytes"
 5     "fmt"
 6     "log"
 7     "os/exec"
 8     "strings"
 9 )
10 
11 func main() {
12     cmd := exec.Command("doveadm", "mailbox", "status", "-u", "[email protected]", "-t", "unseen" ,"INBOX")
13     // cmd := exec.Command("doveadm", "mailbox status -u [email protected] -t unseen INBOX") // 这种写法是不对的
14     cmd.Stdin = strings.NewReader("some input")
15     var out bytes.Buffer
16     cmd.Stdout = &out
17     err := cmd.Run()
18     if err != nil {
19         log.Fatal(err)
20     }
21     fmt.Printf("in all caps: %q\n", out.String())
22 }