RUN mkdir -p /home/build/npm3 && \
    mkdir -p /home/build/smartprobe && \
    mkdir -p /home/build/bpc3 && \
    `#====================================================` \
    `#=============checkout and install rpms==============` \
    svn export xxx && \
    rpm -ivh --force --nodeps *.rpm && \
    `#====================================================` \
    `#=============checkout and install python==============` \
    ... && \

runuser -s /bin/bash mongod -c 'ulimit -S -c 0 >/dev/null 2>&1 ; numactl --interleave=all /usr/bin/mongod -f /etc/mongod.conf'

mongod --fork -f /etc/mongod.conf && \
mongod --shutdown -f /etc/mongod.conf && \
chown mongod:mongod /opt/lib/mongodbpath -R

/etc/init.d/mongod start

 [initandlisten] warning couldn't write to / rename file /datadir/journal/prealloc.0: couldn't open file /datadir/journal/prealloc.0 for writing errno:1 Operation not permitted

setcap cap_fowner+ep /usr/bin/mongod

/* class Person */
function Person(name) {
    this.name = name;
}

Person.prototype.getName = functino() {
    return this.name;
}

var reader = new Person('brainzhang');
reader.getName();

/* Class Author */
function Author(name, books) {
    Person.call(this, name);
    this.books = books;
}
Author.prototype = new Persion();  //set up the prototype chain
Author.prototype.contructor = Author; //set the constructor attribute to author
Author.getBooks = function() {return this.books;}

Author.prototype = new Persion();  //set up the prototype chain
Author.prototype.contructor = Author; //set the constructor attribute to author

function extend(subClass, superClass) {
    var F = function(){};
    F.prototype = superClass.prototype;
    subClass.prototype = new F();
    subClass.prototype.contructor = subClass;
}

function extend(subClass, superClass) {
    var F = function(){};
    F.prototype = superClass.prototype;
    subClass.prototype = new F();
    subClass.prototype.contructor = subClass;

    subClass.superclass = superClass.prototype;
    if(superClass.prototype.contructor == Object.prototype.constructor) {
        superClass.prototype.contructor = superClass;
    }
}

/* Class Author */
function Author(name, books) {
    Author.superclass.contructor.call(this, name);
    this.books = books;
}
extend(Author, Person);
Author.getBooks = function() {return this.books;}

$ git remote -v                                                     // 查看当前远程版本库
$ git remote add cocos2d-x git://github.com/cocos2d/cocos2d-x.git   // 添加原始版本库
$ git fetch cocos2d-x                                               // 获取原始版本库的更新
$ git merge cocos2d-x/master                                        // 合并原始版本库的代码到当前版本库中，合并前确保当前分支是master

$ git branch -a                                                     //查看所有分支
$ git checkout -b branches/xxx origin/branches/xxx                  //chekcout远程分支
$ git push origin --delete <branchname>                             //删除远程分支
$ git push origin --delete tag <tagname>                            //删除远程tag
$ git push origin :<branchName>                                     //推送一个空分支到远程分支，相当于删除分支
$ git push origin :refs/tags/<tagName>                              //推送一个空tag到远程，相当于删除tag

git fetch -p                                                        //在fetch之后删除掉没有与远程分支对应的本地分支

$ git push --delete origin devel                                    //删除远程分支
$ git branch -m devel develop                                       //重命名本地分支
$ git push origin develop                                           //推送本地分支

$ git push --tags

$ git fetch origin tag <tagname>

$ git checkout master                                               //首先切换到master分支

$ git checkout -p branches/A A.h                                    //不切换branch，把RemLanbranches/A上的A.h更新到当前分支

$ git checkout branches/A B.h                                       //去掉-p参数，新增该B.h文件

$ rm C.h                                                            //删除文件目前还没找到其他办法，但效果是一样的

$ git diff master..test

$ git diff --cached

$ git diff HEAD

$ git diff test

$ git diff HEAD -- ./lib

$ git diff --stat

var Book = function(isbn, title, author) {
    if (isbn === undefined) {
        throw new Error('Book constructor requires an isbn.');
    }
    this.isbn = isbn;
    this.title = title || 'No title specified';
    this.author = author || 'No title specified';
}

//define by attr
Book.prototype.display = function() {...};

//define by object literals
Book.prototype = {
    display: function(){...},
    checkIsdn: function(){...}
};

var Book = function(isbn, title, author) {
    if (isbn === undefined) {
        throw new Error('Book constructor requires an isbn.');
    }
    this.setIsbn(isbn);
    this.setTitle(title);
    this.setAuthor(author);
}

//define by attr
Book.prototype.display = function() {...};

//define by object literals
Book.prototype = {
    _checkIsdn: function() {...}

    setIsbn: function(isbn) {
        if!(this._checkIsbn(isbn)) {
            throw new Error("Invalid isbn");
        }
        this._isbn = isbn;
    }

    getIsbn: function() {
        return this._isbn;
    }
    .......
};

var Book = function(iisbn, ititle, iauthor) {

    //private attributes
    var isbn, title, author;

    //private method
    function _checkIsbn(iisbn) {
        ...
    }

    //privileged methods
    this.getIsbn = function() {
        return isbn;
    };

    this.setIsbn = function(iisbn) {
        this._checkIsbn(iisbn) ...
        isbn = iisbn;
    }

    .......

    //contructor code
    this.setIsbn(iisbn);
    this.setTitle(ititle);
    this.setAuthor(iauthor);
};

//public, non-privileged methods

Book.prototype = {
    display: fucntion(){},
    ....
}

var Book = (function() {

    //private static attributes
    var numberOfBooks = 0;

    //private static method
    function checkIsbn(iisbn) {
        ...
    }

    //return the contructor
    return function(iisbn, ititle, iauthor) {
        //private attributes
        var isbn, title, author;

        //privileged methods
        this.getIsbn = function() {
            return isbn;
        };

        this.setIsbn = function(iisbn) {
            this._checkIsbn(iisbn) ...
            isbn = iisbn;
        }
        .......

        //contructor code
        numOfBooks++;
        this.setIsbn(iisbn);
    }
})();

//public, static methods
Book.converTotitleCase = function(){...};

//public, non-privileged methods

Book.prototype = {
    display: fucntion(){},
    ....
}

(function(){
    var foo = 10;
    var bar = 2;
    alert(foo * bar);
})();

var baz;
(function(){
    var foo = 10;
    var bar = 2;
    baz = function(){
        return foo * bar;
    }
})();
baz(); //baz可以访问foo和bar，即使是在匿名函数外面执行

/*
interface Composite {
    function add(child);
    function remove(child);
    ...
}

interface FormItem{
    function save();
}

var CompositeForm = function(id, method, action) {
    //implements Composite, FromItem
    ...
};

CompositeForm.prototype.add = function(child) {
    ...
}
CompositeForm.prototype.remove= function(child) {
    ...
}
CompositeForm.prototype.save= function() {
    ...
}

/*
interface Composite {
    function add(child);
    function remove(child);
    ...
}

interface FormItem{
    function save();
}

var CompositeForm = function(id, method, action) {
    //implements Composite, FromItem
    this.implementsInterfaces = ['Composite', 'FromItem'];
    ...
};
    ...

function addForm(formInstance) {
    if (!implements(formInstance, 'Composite', 'FormItem')) {
        throw new Error("object does not implement a required interface");
    }
}

function implements(objects) {
    for (var i = 1; i < arguments.length; i++) {
        var interfaceName = arguments[i];
        var interfaceFound = false;
        for (var j = 0; j < object.implementsInterfaces[j] == interfaceName) {
            interfaceFound = true;
            break;
        }
        if (!interfaceFound) {
            return false;
        }
    }
    return true;
}

var Composite = new Intreface('Composite', ['add', 'remove']);
var FormItem = new Interface('FormItem', ['save']);
var CompositeForm = function(id, method, action) {
    ...
};

function addForm(formInstance) {
    ensureImplements(formInstance, Composite, FormItem);
    ......
}

var Interface = function(name, methods) {
    if (arguments.length != 2) {
        throw new Error("Interface constructor called with " + arguments.length + "arguments, but expected exactly 2.");
    }
    this.name = name;
    this.methods = [];
    for (var i = 0; len = methods.length; i < len; i++) {
        if (typeof methods[i] !== 'string')  {
            throw new Error("Interface contructor expects method names to be " +
                            "passed in as string");
        }
    }
    this.methods.push(methods[i]);
}

Interface.ensureImplements = function(object) {
    if (arguments.length < 2) {
        throw Error("Functino Interface.ensureImplements called with " + arguments.length +
                    "arguments, but expected at leaset 2.");
    }

    for (var i = 1, len = arguments.length; i < len; i++) {
        if (interface.constructor !== Interface) {
            throw new Error("Function Interface.ensureImplements expects arguments" +
                            "two and above to be instances of Interface.");
        } 
    }

    for (var j = 1, methodsLen = interface.methods.length; j < methodsLen; j++) {
        var method = interface.methods[j];
        if(!object[method] || typeof object[method] !== 'function') {
            throw new Error("Function Interface.ensureImplements: object " +
                            "does not implement the " + interface.name)  +
                            "interface.Method " + method + " was not found.");
        }
    }
}

echo “101 ChinaNet” >> /etc/iproute2/rt_tables
echo ”102 ChinaCnc“ >> /etc/iproute2/rt_tables
echo ”103 ChinaEdu“ >> /etc/iproute2/rt_tables

ip route add default via 1.1.1.254 dev eth0 table ChinaNet
ip route add default via 2.2.2.254 dev eth1 table ChinaCnc
ip route add default via 3.3.3.254 dev eth2 table ChinaEdu

ip rule add from 1.1.1.1 table ChinaNet
ip rule add from 2.2.2.2 table ChinaCnc
ip rule add from 3.3.3.3 table ChinaEdu

ip route show

echo “101 ChinaNet” >> /etc/iproute2/rt_tables
echo ”102 ChinaCnc“ >> /etc/iproute2/rt_tables
echo ”103 ChinaEdu“ >> /etc/iproute2/rt_tables // 这里也可以直接通过Vi编辑

ip route add default via 1.1.1.254 dev eth0 table ChinaNet
ip route add default via 2.2.2.254 dev eth1 table ChinaCnc
ip route add default via 3.3.3.254 dev eth2 table ChinaEdu

ip rule add from 1.1.1.1 table ChinaNet
ip rule add from 2.2.2.2 table ChinaCnc
ip rule add from 3.3.3.3 table ChinaEdu //如果用数字，可以不要上面的“echo”过程