public static String getLinuxPID(String command) {
            BufferedReader reader = null;
            try {
                //显示所有进程
                Process process = Runtime.getRuntime().exec("ps -ef");
                reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
                String line = null;
                while ((line = reader.readLine()) != null) {
                    if (line.contains(command)) {
                        String[] strs = line.split("\\s+");
                        return strs[1];
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (IOException e) {

                    }
                }
            }
            return null;
        }