How Can I Clear the Terminal Screen in Go?

Clearing the Terminal Screen in Go: Native or External Tools

When running Go scripts, clearing the terminal screen can be a practical operation. While there are no built-in Go methods for this task, you can utilize external libraries or define your own custom solutions.

Using External Libraries

The os/exec package provides a means to execute external commands. By leveraging this package, you can use operating system-specific commands to clear the screen. The approach varies depending on the platform:

• Linux: exec.Command("clear")
• Windows: exec.Command("cmd", "/c", "cls")

Rolling Your Own Solution

If you prefer a more customized approach, you can define a clear function for each supported operating system. The runtime.GOOS constant can help you determine the platform and execute the appropriate command.

package main

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

var clear map[string]func()

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

func CallClear() {
    value, ok := clear[runtime.GOOS]
    if ok {
        value()
    } else {
        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...")
}

Note: Using external commands to clear the screen can have security implications. Consider the other methods discussed in this thread as well.

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