获取.sh文件的执行结果

 private  String do_exec(String cmd) {
        String s = "";
        try {
            Process p = Runtime.getRuntime().exec(cmd);
            BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String line = null;
            while ((line = in.readLine()) != null) {
                s += line;
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
//        text.setText(s);
        Toast.makeText(MainActivity.this, "S"+s, Toast.LENGTH_SHORT).show();
        return cmd;
    }