pipetest.go

package main

import (
        "log"
        "os"
        "os/exec"
)

func main() {
        a := exec.Command("ls")
        b := exec.Command("rs")
        pipe, err := a.StdoutPipe()
        if err != nil {
                log.Fatalf("a.StdoutPipe: %v", err)
        }
        b.Stdin = pipe
        b.Stdout = os.Stdout
        b.Stderr = os.Stderr
        err = a.Start()
        if err != nil {
                log.Fatalf("a.Start: %v", err)
        }
        err = b.Start()
        if err != nil {
                log.Fatalf("b.Start: %v", err)
        }
        err = a.Wait()
        if err != nil {
                log.Fatalf("a.Wait: %v", err)
        }
        err = b.Wait()
        if err != nil {
                log.Fatalf("b.Wait: %v", err)
        }
}