Can golang write shell scripts?

Can golang write shell scripts?

Golang can write shell scripts. First, you can create a reader to access the keyboard. Whenever When the Enter key is pressed, any write will be stored in the input variable; then logical operations are performed based on the incoming and outgoing data; and finally the processing results are output using "fmt.Println()".

Code example:

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}

Recommended tutorial: "Go Tutorial"

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