catch_cmd_output

catch_cmd_output.go

package main

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

func main() {
	pr, pw := io.Pipe()
defer pw.Close()

// tell the command to write to our pipe
cmd := exec.Command("pwd", "lh")
cmd.Stdout = pw

go func() {
    defer pr.Close()
    // copy the data written to the PipeReader via the cmd to stdout
    if _, err := io.Copy(os.Stdout, pr); err != nil {
        log.Fatal(err)
    }
}()

// run the command, which writes all output to the PipeWriter
// which then ends up in the PipeReader
if err := cmd.Run(); err != nil {
    log.Fatal(err)
}
}