GoScreen package provides an easy way for clearing the screen and getting the size of the current terminal.

Installation:

$ go get -u github.com/arifamir/goscreen

Clearing the Screen:

You can clear the screen and move the cursor to the top-left corner of the screen. This is good enough to create an animated program (such as an always updating clock or a progress bar).

package main

import (
"fmt"
"time"
"github.com/arifamir/goscreen"
)

func main() {

    goscreen.Clear()

    for {
        // Moves the cursor to the top-left position of the screen
        goscreen.MoveTopLeft()

        // Animate the time always in the same position
        fmt.Println(time.Now())

        time.Sleep(time.Second)
    }
}