It works if you give the child process access to the parent's stdin
:
package main
import (
"os/exec"
"fmt"
"log"
"os"
)
func main() {
cmd := exec.Command("stty", "size")
cmd.Stdin = os.Stdin
out, err := cmd.Output()
fmt.Printf("out: %#v\n", string(out))
fmt.Printf("err: %#v\n", err)
if err != nil {
log.Fatal(err)
}
}
Yields:
out: "36 118\n"
err: <nil>