Golang exec.command

Windows and Linux

package main

import (
    "fmt"
    "os/exec"
    "os"
    //"strings"
    "runtime"
)

func shell_cmd(name string, args []string) {
    cmd := exec.Command(name, args...)
    out, err := cmd.Output()
    if err != nil {
      fmt.Println(err)
    }
    fmt.Println(string(out))
}


func main() {
    if len(os.Args) < 2 {
        fmt.Printf("Usage: %v <fuction>\n", os.Args[0])
        fmt.Printf("Example: %v rcmd ls -lhat\n", os.Args[0])
        os.Exit(3)
      }
      function := os.Args[1]
      system_os := runtime.GOOS
    if system_os == "linux" && function == "rcmd" {
        name := os.Args[1]
        args := os.Args[2:]
        shell_cmd(name, args)
    }else if system_os == "windows" && function == "rcmd" {
        if len(os.Args) < 3 {
            fmt.Printf("Usage: %v <cmd> <args>\n", os.Args[0])
            fmt.Printf("Example: %v ls -lhat\n", os.Args[0])
            os.Exit(3)
        }
        var name string = "powershell.exe"
        args := os.Args[2:]
        shell_cmd(name, args)
  }else{
      fmt.Printf("OS %v not supported.\n", system_os)
  }
}

Windows and Linux 2

package main

import (
    "fmt"
    "os/exec"
    "os"
    //"strings"
    "runtime"
)


func linux_cmd() {
  if len(os.Args) < 2 {
    fmt.Printf("Usage: %v <cmd> <args>\n", os.Args[0])
    fmt.Printf("Example: %v ls -lhat\n", os.Args[0])
    os.Exit(3)
  }
  name := os.Args[1]
  args := os.Args[2:]
  cmd := exec.Command(name, args...)
  out, err := cmd.Output()
  if err != nil {
    fmt.Println(err)
  }
  fmt.Println(string(out))
}


func win_cmd() {
  if len(os.Args) < 2 {
    fmt.Printf("Usage: %v <cmd> <args>\n", os.Args[0])
    fmt.Printf("Example: %v ls -lhat\n", os.Args[0])
    os.Exit(3)
  }
  // name := os.Args[1]
  name := "powershell.exe"
  args := os.Args[1:]
  cmd := exec.Command(name, args...)
  out, err := cmd.Output()
  if err != nil {
    fmt.Println(err)
  }
  fmt.Println(string(out))
}

func main() {
  os := runtime.GOOS
  //var os string = runtime.GOOS
  if os == "linux" {
    linux_cmd()
  }else if os == "windows" {
    fmt.Printf("OS %v is supported.", os)
    win_cmd()
  }else{
      fmt.Printf("OS %v not supported.", os)
  }
}

Windows

package main

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


func pscmd(s string){
    args := []string{s}
    // cmd := exec.Command("powershell.exe", "ls", "-Depth", "1")
    cmd := exec.Command("powershell.exe", args...)

    cmd.Stdout = os.Stdout
    cmd.Stderr = os.Stderr
    err := cmd.Run()
    if err != nil {
        log.Fatalf("cmd.Run() failed with %s\n", err)
    }
    fmt.Println("======")
}

func main(){   

    pscmd("ls -Depth 1")
    pscmd("echo 'hi there'")

}