Go语言调用Shell与可执行文件的实现

package main

import (
  "fmt"
  "os/exec"
)

func main(){
  cmd := exec.Command("touch", "test_file")

  err := cmd.Run()
  if err != nil {
    fmt.Println("Execute Command failed:" + err.Error())
    return
  }

  fmt.Println("Execute Command finished.")
}

cmd := exec.Command("my_shell.sh")

package main

import (
  "fmt"
  "os/exec"
)

func main(){
  command := `./dir_size.sh .`
  cmd := exec.Command("/bin/bash", "-c", command)

  output, err := cmd.Output()
  if err != nil {
    fmt.Printf("Execute Shell:%s failed with error:%s", command, err.Error())
    return
  }
  fmt.Printf("Execute Shell:%s finished with output:\n%s", command, string(output))
}

#!/bin/bash
du -h --max-depth=1 $1

[root@localhost opt]# ll
total 2120
-rwx------. 1 root root   36 Jan 22 16:37 dir_size.sh
-rwx------. 1 root root 2152467 Jan 22 16:39 execCommand
drwxrwxr-x. 11 1000 1000  4096 Jul 12 2017 kibana
drwx------. 2 root root  4096 Jan 16 10:45 sftpuser
drwx------. 3 root root  4096 Jan 22 16:41 upload
[root@localhost opt]# ./execCommand 
Execute Shell:./dir_size.sh . finished with output:
4.0K  ./sftpuser
181M  ./kibana
1.1G  ./upload
1.2G  .

package main

import (
  "fmt"
  "io/ioutil"
  "os/exec"
)

func main(){
  cmd := exec.Command("/bin/bash", "-c", "grep test")

  stdin, _ := cmd.StdinPipe()
  stdout, _ := cmd.StdoutPipe()

  if err := cmd.Start(); err != nil{
    fmt.Println("Execute failed when Start:" + err.Error())
    return
  }

  stdin.Write([]byte("go text for grep\n"))
  stdin.Write([]byte("go test text for grep\n"))
  stdin.Close()

  out_bytes, _ := ioutil.ReadAll(stdout)
  stdout.Close()

  if err := cmd.Wait(); err != nil {
    fmt.Println("Execute failed when Wait:" + err.Error())
    return
  }

  fmt.Println("Execute finished:" + string(out_bytes))
}