golang可以寫shell腳本嗎

golang可以寫shell腳本嗎

#golang是可以寫shell腳本，先可以透過建立一個閱讀器去存取鍵盤，每當按下回車鍵時，任何的寫入都會儲存到輸入變數中；然後根據出入的資料來執行邏輯運算；最後將處理結果使用「fmt.Println()」將資料輸出即可。

程式碼範例：

package main

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

func main() {
    reader := bufio.NewReader(os.Stdin) for {
        fmt.Print("> ")     // Read the keyboad input.
        input, err := reader.ReadString('\n')       if err != nil {
            fmt.Fprintln(os.Stderr, err)
        }       // Handle the execution of the input.
        err = execInput(input)      if err != nil {
            fmt.Fprintln(os.Stderr, err)
        }
    }
}
// ErrNoPath is returned when 'cd' was called without a second argument.var ErrNoPath = errors.New("path required")

func execInput(input string) error {    // Remove the newline character.
    input = strings.TrimSuffix(input, "\n") // Split the input separate the command and the arguments.
    args := strings.Split(input, " ")   // Check for built-in commands.
    switch args[0] {    case "cd":      // 'cd' to home with empty path not yet supported.
        if len(args) < 2 {          return ErrNoPath
        }
        err := os.Chdir(args[1])        if err != nil {         return err
        }       // Stop further processing.
        return nil
    case "exit":
        os.Exit(0)
    }   // Prepare the command to execute.
    cmd := exec.Command(args[0], args[1:]...)   // Set the correct output device.
    cmd.Stderr = os.Stderr
    cmd.Stdout = os.Stdout

    // Execute the command and save it&#39;s output.
    err := cmd.Run()    if err != nil {     return err
   }   return nil}

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