func RunW(cmd string, args ...string) (string, error) {
	return Run("", false, cmd, args...)
}
RunW runs the command in the current working dir
package proc
import (
	"bytes"
	"io"
	"os"
	"github.com/codeskyblue/kexec"
)
func Get(dir, command string, arg ...string) (*kexec.KCommand, error) {
	var commandDir string
	var err error
	if dir == "" {
		commandDir, err = os.Getwd()
		if err != nil {
			return nil, err
		}
	} else {
		commandDir = dir
	}
	p := kexec.Command(command, arg...)
	p.Dir = commandDir
	return p, nil
}