let name: string = "Alice";   // string 类型
const age: number = 30;       // number 类型
let isActive: boolean = true; // boolean 类型

let score: number = 100;
let greeting: string = "Hello, world!";

let numbers: number[] = [1, 2, 3, 4];
let strings: Array<string> = ["a", "b", "c"];

let person: [string, number] = ["Alice", 30];

function greet(name: string): string {
    return "Hello, " + name;
}

let result = greet("Alice"); // result 类型是 string

interface Person {
    name: string;
    age: number;
}

let person: Person = {
    name: "Alice",
    age: 30
};

let value: string | number = "hello";
value = 42;

type ID = string | number;
let userId: ID = "abc123";

class Car {
    make: string;
    model: string;

    constructor(make: string, model: string) {
        this.make = make;
        this.model = model;
    }

    displayInfo(): string {
        return `${this.make} ${this.model}`;
    }
}

const myCar = new Car("Toyota", "Corolla");
console.log(myCar.displayInfo());

enum Color {
    Red,
    Green,
    Blue
}

let c: Color = Color.Green; //c的值为1

let x = 10;  // TypeScript 推断 x 为 number 类型
x = "hello"; // 编译错误，x 必须是 number 类型

let u: undefined = undefined;
let n: null = null;

wsl --install

wsl -l -v

wsl --set-version <distribution name> <versionNumber>

wsl --set-default-version <Version>

wsl --shutdown

wsl --terminate <Distribution Name>

wsl -d <Distribution Name>

sudo mount -t drvfs E:/wsl-file/ /mnt/e

LxRunOffline d -n <Distribution Name> -d <Path> -N <New Distribution Name>

LxRunOffline m -n <Distribution Name> -d <Path>

icacls <Path> /grant "<Windows User Name>:(OI)(CI)(F)"

@"D::\phpstudy_pro\Extensions\php\php7.4.3nts\php.exe" %*

@"D:\phpstudy_pro\Extensions\php\php7.3.4nts\php.exe" %*

netstat -ano

netstat -aon|findstr "8081"

taskkill /T /F /PID 8066 

git clone https://github.com/top-think/framework.git

git pull

//所有更改暂存
git add .
//指定文件暂存
git add /app/controll/index.php

git status

git diff
//或指定查看具体文件
git diff /app/controll/index.php

//查看暂存区中的修改加上参数--cached
git diff --cachec
git diff --cachec /app/controll/index.php

//拓展：此命令亦可以查看不同版本中的修改,例如查看当前版本与上一个版本的区别，以下命令中HEAD为git规定代表当前版本，符号^代表上一个版本，可重叠使用，例如^^代表上上个版本，依次类推^^^,^^^^,^^^^^,……
git diff HEAD^ HEAD
//可写具体版本号,以下命令以XXXX代表版本号
git diff XXXX^ XXXX

git commit -m "本次修改内容的说明/注释"

git push

git pull

<<<<<<< HEAD
本地内容
=======
远程文件内容
>>>>>>> XXXX(版本号)

git add .
git commit -m "版本说明"
git push

sudo mkdir /tem
cd /tem
sudo wget http://www.xunsearch.com/download/xunsearch-full-latest.tar.bz2
sudo tar -xjf xunsearch-full-latest.tar.bz2

cd xunsearch-full-1.4.17/
sudo sh setup.sh

bufferevent_openssl.c:228:19: error: storage size of 'methods_bufferevent' isn't known
  228 | static BIO_METHOD methods_bufferevent = {
      |                   ^~~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:793: bufferevent_openssl.lo] Error 1

cd ..
sudo tar -zxvf libevent-2.1.12-stable.tar.gz
sudo tar -cjf libevent-2.1.12-stable.tar.bz2 libevent-2.1.12-stable
sudo cp libevent-2.1.12-stable.tar.bz2 xunsearch-full-1.4.17/packages/
cd xunsearch-full-1.4.17/packages/
sudo rm -f libevent-2.0.21-stable.tar.bz2
cd ..
sudo ./setup.sh

+=================================================+
| Installation completed successfully, Thanks you |
| 安装成功，感谢选择和使用 xunsearch              |
+-------------------------------------------------+
| 说明和注意事项：                                |
| 1. 开启/重新开启 xunsearch 服务程序，命令如下： |
|    /usr/local/xunsearch/bin/xs-ctl.sh restart
|    强烈建议将此命令写入服务器开机脚本中         |
|                                                 |
| 2. 所有的索引数据将被保存在下面这个目录中：     |
|    /usr/local/xunsearch/data
|    如需要转移到其它目录，请使用软链接。         |
|                                                 |
| 3. 您现在就可以在我们提供的开发包(SDK)基础上    |
|    开发您自己的搜索了。                         |
|    目前只支持 PHP 语言，参见下面文档：          |
|    /usr/local/xunsearch/sdk/php/README
+=================================================+

cd /usr/local/xunsearch/sdk/php/util/
php RequiredCheck.php

sudo apt install php-pear
cd /tem
sudo wget https://pecl.php.net/get/apcu_bc-1.0.5.tgz
sudo pecl install apcu_bc-1.0.5.tgz
cd /usr/local/xunsearch/sdk/php/util/
php RequiredCheck.php

cd /usr/local/xunsearch
sudo bin/xs-ctl.sh restart

grep -rn "查找的内容" ./

sed -i "s/原字符串/新字符串/g" `grep 原字符串 -rl 所在目录`

sed -i "s/mahuinan/huinanma/g" `grep mahuinan -rl /www`

sed -i "s/oldString/newString/g" `grep oldString -rl /path`

sed -i "s/大小多少/日月水火/g" `grep 大小多少 -rl /usr/aa`
sed -i "s/大小多少/日月水火/g" `grep 大小多少 -rl ./`

sed -i "s/<script src=\"http:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/1.4\/query.min.js\" type=\"text\/javascript\"><\/script>/ /g" `grep '<script src="http:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/1.4\/jquery.min.js" type="text\/javascript"><\/script>' -rl test/`

sed -i "s/https:\/\/code.jquery.com\/jquery-1.12.4.min.js/<%=basePath%>\/js\/jquery\/jquery-1.12.4.min.js/g" `grep -rl "https:\/\/code.jquery.com\/jquery-1.12.4.min.js" ./`

pwdx PID