如何在Golang中打印多行exec输出

Question

I'm trying to write a simple golang program that lists the files in a directory. Whenever my shell command yields multiple lines, it registers in Go as an array

For example, when i try the following:

import (
    "log"
    "os/exec"
    "fmt"
)
func main (){

    out,err := exec.Command("ls").Output()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(out)

}

I end up with the output [101 108 105 109 115 116 97 116 115 46 105 109 108 10 101 110 118 10 115 99 114 97 116 99 104 10 115 114 99 10]

I feel like this is a common thing to do but wasn't able to find it on here anywhere.

Answer 1

The return type of the first value from Output is []byte. fmt.Println is displaying the numeric values of each slice element.

To show the desired result of the output of the command, you can either convert the byte slice to a string or use a format string with the %s verb:

fmt.Println(string(out))

Or:

fmt.Printf("%s
", out)