How to exec shell command as normal user while current user is root

Question

I run go run main.go as root, but I want to execute top in main.go as a normal user.

# main.go
package main

import (
    "context"
    "fmt"
    "os"
    "os/exec"
)

func run() {
    cmd := exec.CommandContext(context.TODO(), "bash", "-c", "top")
    cmd.Stdin = os.Stdin
    cmd.Stdout = os.Stdout
    cmd.Stderr = os.Stderr
    err := cmd.Run()
    if err != nil {
        fmt.Println(
            cmd.ProcessState.Success())
        return
    }
    fmt.Println(
        cmd.ProcessState.Success())
}

func main() {
    run()
}

How can I do this?

Note: Never use `go run main.go`. Go code is managed by package, not file. Use `go run .` instead, for example. — Jonathan Hall, Aug 25 '21 at 11:37

krasnosvar · Answer 1 · 2021-08-25T12:03:02.517

0

Try this:

package main

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

func main() {

    out, err := exec.Command("sudo", "-u", "YOURUSERNAME", "top", "-n", "1", "-b").Output()

    if err != nil {
        log.Fatal(err)
    }

    fmt.Println(string(out))
}

edited Aug 25 '21 at 12:03

answered Aug 25 '21 at 11:46

krasnosvar

101
4

How does it answer the question? – Arkadiusz Drabczyk Aug 25 '21 at 11:48
thx, but i don't want to use sudo, su, runuser. so these is other answers? – Yan Tao Aug 25 '21 at 12:17
i got https://stackoverflow.com/questions/21705950/running-external-commands-through-os-exec-under-another-user – Yan Tao Aug 25 '21 at 12:20

score 0 · Answer 2 · answered Aug 25 '21 at 11:58

0

try execute command like this:

su fakeuser -c 'top -u `whoami`'

answered Aug 25 '21 at 11:58

HALF9000

518
2
14

thx, but i don't want to use sudo, su, runuser. so these is other answers? – Yan Tao Aug 25 '21 at 12:17
i got https://stackoverflow.com/questions/21705950/running-external-commands-through-os-exec-under-another-user – Yan Tao Aug 25 '21 at 12:20

How to exec shell command as normal user while current user is root

2 Answers2