Why Does Adding '-o cpu' to My Go `exec.Command` for `top` Cause an Error, and How Can I Fix It?

Using Command Line Arguments with Go

This Go code successfully retrieves details of 10 processes using the "top" command with specific arguments:

package main

import (
    "os/exec"
)

func main() {
    print(top())
}

func top() string {
    app := "/usr/bin/top"

    cmd := exec.Command(app, "-n", "10", "-l", "2")
    out, err := cmd.CombinedOutput()

    if err != nil {
        return err.Error() + " " + string(out)
    }

    value := string(out)
    return value
}

However, an additional "-o cpu" argument causes an error:

cmd := exec.Command(app, "-o", "cpu", "-n", "10", "-l", "2")

In the console, the command "top -o cpu -n 10 -l 2" works as intended. The issue lies in the way the "-o" argument is being passed to the "top" command.

To resolve this, it's necessary to separate the arguments explicitly like:

cmd := exec.Command(app, "-o", "cpu", "-n", "10", "-l", "2")

This ensures that the arguments are passed correctly to the command, allowing it to execute properly.

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