如何清除Go中的终端屏幕？

Question

Are there any standard method in Golang to clear the terminal screen when I run a GO script? or I have to use some other libraries?

Answer 1

You have to define a clear method for every different OS, like this. When the user's os is unsupported it panics

package main

import (
    "fmt"
    "os"
    "os/exec"
    "runtime"
    "time"
)

var clear map[string]func() //create a map for storing clear funcs

func init() {
    clear = make(map[string]func()) //Initialize it
    clear["linux"] = func() { 
        cmd := exec.Command("clear") //Linux example, its tested
        cmd.Stdout = os.Stdout
        cmd.Run()
    }
    clear["windows"] = func() {
        cmd := exec.Command("cmd", "/c", "cls") //Windows example, its tested 
        cmd.Stdout = os.Stdout
        cmd.Run()
    }
}

func CallClear() {
    value, ok := clear[runtime.GOOS] //runtime.GOOS -> linux, windows, darwin etc.
    if ok { //if we defined a clear func for that platform:
        value()  //we execute it
    } else { //unsupported platform
        panic("Your platform is unsupported! I can't clear terminal screen :(")
    }
}

func main() {
    fmt.Println("I will clean the screen in 2 seconds!")
    time.Sleep(2 * time.Second)
    CallClear()
    fmt.Println("I'm alone...")
}

(the command execution is from @merosss' answer)