Exec a shell command in Go

Question

I\'m looking to execute a shell command in Go and get the resulting output as a string in my program. I saw the Rosetta Code version:

package main
import \"f         


        

Answer 1

This answer does not represent the current state of the Go standard library. Please take a look at @Lourenco's answer for an up-to-date method!

---

Your example does not actually read the data from stdout. This works for me.

package main

import (
   "fmt"
   "exec"
   "os"
   "bytes"
   "io"
)

func main() {
    app := "/bin/ls"
    cmd, err := exec.Run(app, []string{app, "-l"}, nil, "", exec.DevNull, exec.Pipe, exec.Pipe)

    if (err != nil) {
       fmt.Fprintln(os.Stderr, err.String())
       return
    }

    var b bytes.Buffer
    io.Copy(&b, cmd.Stdout)
    fmt.Println(b.String())

    cmd.Close()
}