golang调用shell命令(实时输出,终止)

package main
​
import (
    "fmt"
    "os/exec"
)
​
func main() {
    Command("ls")
}
​
// 这里为了简化，我省去了stderr和其他信息
func Command(cmd string) error {
    c := exec.Command("bash", "-c", cmd)
    // 此处是windows版本
    // c := exec.Command("cmd", "/C", cmd)
    output, err := c.CombinedOutput()
    fmt.Println(string(output))
    return err
}

package main
​
import (
    "bufio"
    "fmt"
    "io"
    "os/exec"
    "sync"
)
​
func main() {
    // 执行ping baidu的命令, 命令不会结束
    Command("ping www.baidu.com")
​
}
​
func Command(cmd string) error {
    //c := exec.Command("cmd", "/C", cmd)   // windows
    c := exec.Command("bash", "-c", cmd)  // mac or linux
    stdout, err := c.StdoutPipe()
    if err != nil {
        return err
    }
    var wg sync.WaitGroup
    wg.Add(1)
    go func() {
        defer wg.Done()
        reader := bufio.NewReader(stdout)
        for {
            readString, err := reader.ReadString('\n')
            if err != nil || err == io.EOF {
                return
            }
            fmt.Print(readString)
        }
    }()
    err = c.Start()
    wg.Wait()
    return err
}

package main
​
import (
    "bufio"
    "context"
    "fmt"
    "io"
    "os/exec"
    "sync"
    "time"
)
​
func main() {
    ctx, cancel := context.WithCancel(context.Background())
    go func(cancelFunc context.CancelFunc) {
        time.Sleep(3 * time.Second)
        cancelFunc()
    }(cancel)
    Command(ctx, "ping www.baidu.com")
}
​
func Command(ctx context.Context, cmd string) error {
    // c := exec.CommandContext(ctx, "cmd", "/C", cmd)
    c := exec.CommandContext(ctx, "bash", "-c", cmd) // mac linux
    stdout, err := c.StdoutPipe()
    if err != nil {
        return err
    }
    var wg sync.WaitGroup
    wg.Add(1)
    go func(wg *sync.WaitGroup) {
        defer wg.Done()
        reader := bufio.NewReader(stdout)
        for {
            // 其实这段去掉程序也会正常运行，只是我们就不知道到底什么时候Command被停止了，而且如果我们需要实时给web端展示输出的话，这里可以作为依据 取消展示
            select {
            // 检测到ctx.Done()之后停止读取
            case 

package main
​
import (
    "bufio"
    "context"
    "fmt"
    "io"
    "os/exec"
    "sync"
    "time"
)
​
func main() {
    ctx, cancel := context.WithCancel(context.Background())
    go func(cancelFunc context.CancelFunc) {
        time.Sleep(3 * time.Second)
        cancelFunc()
    }(cancel)
    Command(ctx, "ping www.baidu.com")
}
​
func read(ctx context.Context, wg *sync.WaitGroup, std io.ReadCloser) {
    reader := bufio.NewReader(std)
    defer wg.Done()
    for {
        select {
        case 

package main
​
import (
    "bufio"
    "fmt"
    "io"
    "os/exec"
    "sync"
    "golang.org/x/text/encoding/simplifiedchinese"
)
​
type Charset string
​
const (
    UTF8    = Charset("UTF-8")
    GB18030 = Charset("GB18030")
)
​
func main() {
    // 执行ping baidu的命令, 命令不会结束
    Command("ping www.baidu.com")
​
}
​
func Command(cmd string) error {
    //c := exec.Command("cmd", "/C", cmd)   // windows
    c := exec.Command("bash", "-c", cmd)  // mac or linux
    stdout, err := c.StdoutPipe()
    if err != nil {
        return err
    }
    var wg sync.WaitGroup
    wg.Add(1)
    go func() {
        defer wg.Done()
        reader := bufio.NewReader(stdout)
        for {
            readString, err := reader.ReadString('\n')
            if err != nil || err == io.EOF {
                return
            }
            byte2String := ConvertByte2String([]byte(readString), "GB18030")
            fmt.Print(byte2String)
        }
    }()
    err = c.Start()
    wg.Wait()
    return err
}
​
func ConvertByte2String(byte []byte, charset Charset) string {
    var str string
    switch charset {
    case GB18030:
        var decodeBytes, _ = simplifiedchinese.GB18030.NewDecoder().Bytes(byte)
        str = string(decodeBytes)
    case UTF8:
        fallthrough
    default:
        str = string(byte)
    }
    return str
}

import (  
  "fmt"
  "time"
​
  "golang.org/x/crypto/ssh"
)
​
func connect(user, password, host string, port int) (*ssh.Session, error) {  
  var (
    auth         []ssh.AuthMethod
    addr         string
    clientConfig *ssh.ClientConfig
    client       *ssh.Client
    session      *ssh.Session
    err          error
  )
  // get auth method
  auth = make([]ssh.AuthMethod, 0)
  auth = append(auth, ssh.Password(password))
​
  clientConfig = &ssh.ClientConfig{
    User:    user,
    Auth:    auth,
    Timeout: 30 * time.Second,
  }
​
  // connet to ssh
  addr = fmt.Sprintf("%s:%d", host, port)
​
  if client, err = ssh.Dial("tcp", addr, clientConfig); err != nil {
    return nil, err
  }
​
  // create session
  if session, err = client.NewSession(); err != nil {
    return nil, err
  }
​
  return session, nil
}

import (  
  "fmt"
  "log"
  "os"
  "time"
​
  "golang.org/x/crypto/ssh"
)
​
func main() {  
  session, err := connect("root", "xxxxx", "127.0.0.1", 22)
  if err != nil {
    log.Fatal(err)
  }
  defer session.Close()
​
  session.Run("ls /; ls /abc")
}

func main() {  
  session, err := connect("root", "xxxxx", "127.0.0.1", 22)
  if err != nil {
    log.Fatal(err)
  }
  defer session.Close()
​
  session.Stdout = os.Stdout
  session.Stderr = os.Stderr
  session.Run("ls /; ls /abc")
}

func main() {  
  session, err := connect("root", "olordjesus", "dockers.iotalabs.io", 2210)
  if err != nil {
    log.Fatal(err)
  }
  defer session.Close()
​
  fd := int(os.Stdin.Fd())
  oldState, err := terminal.MakeRaw(fd)
  if err != nil {
    panic(err)
  }
  defer terminal.Restore(fd, oldState)
​
  // excute command
  session.Stdout = os.Stdout
  session.Stderr = os.Stderr
  session.Stdin = os.Stdin
​
  termWidth, termHeight, err := terminal.GetSize(fd)
  if err != nil {
    panic(err)
  }
​
  // Set up terminal modes
  modes := ssh.TerminalModes{
    ssh.ECHO:          1,     // enable echoing
    ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud
    ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud
  }
​
  // Request pseudo terminal
  if err := session.RequestPty("xterm-256color", termHeight, termWidth, modes); err != nil {
    log.Fatal(err)
  }
​
  session.Run("top")
}