How to capture the output of the terminal using Go?

I want to create a simple program using Go that can get an output in the terminal output. For example:

echo "john" | goprogram

The output is hi john

When using command cat

cat list_name.txt | goprogram

The output using

hi doe
hi james
hi chris

Is there a way to do this using Go?

Read from os.Stdin. Here's an example implementation of the Hi program.

package main
import (
	"bufio"
	"fmt"
	"log"
	"os"
)
func main() {
	s := bufio.NewScanner(os.Stdin)
	for s.Scan() {
		fmt.Println("hi", s.Text())
	}
	if s.Err() != nil {
		log.Fatal(s.Err())
	}
}

This program creates a scanner to read os.Stdin by line. For each line in stdin, the program prints "hi" and the line.