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sudo chmod -R 755 laravel_blog
chmod -R o+w laravel_blog/storage

https://www.howtoforge.com/tutorial/how-to-install-laravel-5x-with-nginx-and-php-fpm-7-on-centos-7/

https://www.cyberciti.biz/faq/centos-stop-start-restart-sshd-command/

https://inchoo.net/magento-2/how-to-create-a-basic-module-in-magento-2/

=HOUR(D3-C3)+(MINUTE(D3-C3)/60)

IF mod(@sum,2) == 0 THEN
  outputline(concat("<br>", @sum, " is even"))
ELSE
  outputline(concat("<br>", @sum, " is odd"))
ENDIF

class GlobalKeyboardHookEventArgs : HandledEventArgs
{
    public GlobalKeyboardHook.KeyboardState KeyboardState { get; private set; }
    public GlobalKeyboardHook.LowLevelKeyboardInputEvent KeyboardData { get; private set; }

    public GlobalKeyboardHookEventArgs(
        GlobalKeyboardHook.LowLevelKeyboardInputEvent keyboardData,
        GlobalKeyboardHook.KeyboardState keyboardState)
    {
        KeyboardData = keyboardData;
        KeyboardState = keyboardState;
    }
}

//Based on https://gist.github.com/Stasonix
class GlobalKeyboardHook : IDisposable
{
    public event EventHandler<GlobalKeyboardHookEventArgs> KeyboardPressed;

    // EDT: Added an optional parameter (registeredKeys) that accepts keys to restict
    // the logging mechanism.
    /// <summary>
    /// 
    /// </summary>
    /// <param name="registeredKeys">Keys that should trigger logging. Pass null for full logging.</param>
    public GlobalKeyboardHook(Keys[] registeredKeys = null)

<?php
$templates->addHook('fileModified', function(HookEvent $event) {
    $template = $event->arguments(0);
    $event->log->message("Detected change to $template->filename");
});

1. https://github.com/Paxa/kt
2. docker run -it evpavel/kt bash
3. kt consume -brokers 10.30.30.116 -topic Flight_Stats -encodevalue base64

Article Midudev: https://www.getrevue.co/profile/midudev/issues/mas-alla-de-console-log-descubre-de-lo-que-es-capaz-console-199625
- Filter by level:
  - console.warn
  - console.error
  - console.info
- console.table
- console.time and console.timeEnd
- console.count
- console.assert

// ## 日期格式化时区 ##
time := time.Now()
loc, err := time.LoadLocation("")    // 默认UTC    
loc, err := time.LoadLocation("Local")    // 一般为CST
loc, err := time.LoadLocation("America/Los_Angeles")    // 美国洛杉矶PDT
loc, _:= time.LoadLocation("Asia/Chongqing")     // CST

// ## 获取当前时间并格式化 ##
// 格式化，golang中格式不是‘yyyy-MM-dd HH:mm:ss’，而是采用golang诞生时间作为格式
t = "2006-01-02 15:04:05" 
time := time.Now()
fmt.Println(time.Format(t))

// ## 格式化后的日期字符串转回Time ##
// 格式化
t = "2006-01-02 15:04:05" 
// 日期字符串
str = "2017-09-13 00:00:01"
loc, err := time.LoadLocation("Local")
time, err := time.ParseInLocation(t, str, loc)

fmt.Println(time)

if err == Nil{
}

-- calculate realtime stock levels
select 
	master.catalogno,
	master.stock_qty,
	master.in_qty,
	master.ship_qty,
	master.reserved_qty,
	master.backorder_qty,
	master.final_stock_qty,
	master.final_stock_qty - reserved_qty as on_hand_qty,
	master.releaseartist,
	master.releasetitle,
	master.format,
	master.releasedate,
	master.label,
	master.barcode
	from
(select
	totals.catalogno,
	totals.stock_qty,
	totals.in_qty,
	totals.ship_qty,
	coalesce(res_back.reserved_qty, 0) as reserved_qty,
	coalesce(res_back.backorder_qty, 0) as backorder_qty,
	totals.stock_qty + totals.in_qty - totals.ship_qty as final_stock_qty,
	catalognew.releaseartist,
	catalognew.releasetitle,
	catalognew.format,
	catalognew.releasedate,
	catalognew.label,
	catalognew.barcode
	from 
--get daily stock, recent stocked in, recent shipped 	
(select 
	kdgstock.catalogno,
	min(kdgstock.stock_qty) as stock_qty,
	sum(coalesce(stock_in.in_qty, 0)) as in_qty,
	sum(coalesce(not_shipped.ship_qty, 0)) as ship_qty
	from kdgstockt

https://www.howtogeek.com/312883/how-to-shrink-a-virtualbox-virtual-machine-and-free-up-disk-space/

# Tools to monitor networking
## nload: 
Sinple tool to view the general network usage. 

Install:
```
$ sudo apt install nload
```

Use:

```
$ nload
```

## nethogs
Shows the bandwidth used by process

Install:
```
$ sudo apt install nethogs
```

Use:

```
$ nethogs
```

/**
 * 正则验证
 * @param s     验证字符串
 * @param type  类型
 * @returns {boolean} true:验证通过
 */
function expValidate (s, type) {
    var objexp = null;
    switch (type) {
        case 'money': //金额格式,格式定义为带小数的正数，小数点后最多三位
            objexp = /^([1-9]\d{0,9}|0)([.]?|(\.\d{1,2})?)$/;
            break;
        case 'numletter_': //英文字母和数字和下划线组成
            objexp = /^[0-9a-zA-Z\_]+$/;
            break;
        case 'numletter': //英文字母和数字组成
            objexp = /^[0-9a-zA-Z]+$/;
            break;
        case 'numletterchina': //汉字、字母、数字组成
            objexp = /^[\u4E00-\u9FA5A-Za-z0-9_]+$/;
            break;
        case 'email': //邮件地址格式
            objexp = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
            break;
        case 'tel': //固话格式
            objexp = /^((\d2,3)|(\d{3}\-))?(0\d2,3|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?$/;
            break;
        case 'mobile': //手机号码
            objexp = /^1[3456789]\d{9}$/;
            break;
        case 'decimal': //浮点数
            

    @pytest.mark.test
    @pytest.mark.owner_zhaozonghao
    @pytest.mark.parametrize('host, memberid', [('api.1sapp.com', 1), ('api.2sapp.com', 2)])
    def test_fixture(self, host, memberid):
        print('这次的host等于{0}, member是{1}'.format(host, memberid))
        assert memberid == 1