执行shell命令-JAVA

//执行shell命令和脚本

public static String getIPByShell(String inetType) {
        String ifip = "";

        StringBuilder sb = new StringBuilder();
        String command = "/usr/sbin/ifconfig " + inetType;
        try {
            Process p = Runtime.getRuntime().exec(command);
            BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
            String line = null;
            while ((line = br.readLine()) != null) {
                sb.append(line);
            }
            br.close();
            p.destroy();
        } catch (IOException e) {
            e.printStackTrace();
        }

        String ifinfo = sb.toString();
        if (ifinfo.indexOf("netmask") == -1) {
            logger.warn("command=[{}] 没有返回 [netmask]相关的信息", command);
        } else {
            // 从netmask处截取，然后以空格拆分，最后一个值即为内网IP
            String[] ifinfoArr = ifinfo.substring(0, ifinfo.indexOf("netmask")).split(" ");
            ifip = ifinfoArr[ifinfoArr.length - 1];
        }
        return ifip;
    }

/**
     * 判断操作系统是否 win 或者 mac 等个人电脑
     */
    public static boolean isPC(){
        String os = System.getProperty("os.name");
        if(os.toLowerCase().startsWith("win") || os.toLowerCase().startsWith("mac")){
            return true;
        }
        return false;
    }

/**
     * 得到公网IP
     * 
     */
    public static String getInternetIp2() {
        String ip = "";
        String chinaz = "http://ip.chinaz.com";

        StringBuilder inputLine = new StringBuilder();
        String read = "";
        URL url = null;
        HttpURLConnection urlConnection = null;
        BufferedReader in = null;
        try {
            url = new URL(chinaz);
            urlConnection = (HttpURLConnection) url.openConnection();
            in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8"));
            while ((read = in.readLine()) != null) {
                inputLine.append(read + "
");
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        Pattern p = Pattern.compile("\<dd class\="fz24">(.*?)\<\/dd>");
        Matcher m = p.matcher(inputLine.toString());
        if (m.find()) {
            String ipstr = m.group(1);
            ip = ipstr;
        }
        return ip;
    }