return code

Java Lock-another Implementation of Synchronization Usually Junior programmers like to use the synchronized keyword to implement synchronization mechanism. The reason is simple. It is simple to use. We don't need to consider more details and have

Java Web development Introduction, Java Web DevelopmentIntroduction Java supports web development well. on the desktop, Eclipse RCP is not successful. JAVA is mainly used on the server side, and is an extremely important Web Background development

SubprocessThis article refers to the http://www.cnblogs.com/vamei/archive/2012/09/23/2698014.html of the Vamei great God.Using the Subprocess package can further open a sub-process under the process of running Python, to create a child process to

System mirroring and environmental requirements:1) for the Windows Series version and developers of the relevant tutorials, please refer to this Article 1.0 start the installation steps2) for Centos 6 series and Aliyun Linux 6 series, please refer

In the shell there will be a less common situation, that is, the script sometimes has a time-out phenomenon. Generally speaking, we will use the following script as a "timeout watchdog":#!/bin/bash./$1 & #这里设定后台运行的第一个参数pid = $!

1.ansible IntroductionAnsible is an automated operations tools, based on Python development, the collection of many operations tools (puppet,cfengine,chef,func,fabric) advantages, the implementation of batch (System configuration, program deployment,

Order: Up to Jul 8th,2013 official release of the latest Nginx RTMP module Nginx-rtmp-module instructions detailed. Core rtmpSyntax: rtmp {...}Context: Root Description: Saves blocks for all RTMP configurations. ServerSyntax: server {...}Context:

Requirements: Use the Post method to provide mobile phone number to the server, to find the place of the mobile phone number Ideas: There is a Web server on the network dedicated to providing the attribution information of the mobile phone

At the beginning of the article, let's review how to open the MongoDB database with the cmd Command window, with the following command:Open the MongoDB databaseCD D:\Program Files\mongodb\binmongod " D:\Program Files\mongodb\data "　See the above

Spring boot rest example Introduction: This article will help you use Spring Boot to create simple REST services. You will learn What is a REST service? How to Use Spring Initializr to guide the creation of Rest service applications? How do I

Base Station usage API DescriptionMobile Unicom Base Station positioningParameter Description : name type whether you must Description MCC  int ( decimal   Yes  mcc country code:

"Unable to locate the update row" is reported when MYSQL is updated using ADO. Some values may have been changed after the last read ." This strange error occurred when I used ADO to connect MYSQL to update data through ODBC in DELPHI today: the row

This strange error occurred when I used ADO to connect MYSQL to update data through ODBC in DELPHI today: the row cannot be updated or located. Some 20540; may have been changed after the last read. I was puzzled, so I went online to check. Some say

Base64 encryption of different or string encryption methods Encryption function encode ($str, $key) { $res = Base64_encode ($STR); $code = $res ^ $key; return $code;} Decrypt function decode ($STR, $key) { return Base6

Vim selfrestart.sh #创建自启动脚本, add the following to the file, the value of the script may change #!/bin/sh# func: Automatically monitor tomcat scripts and perform restart operations # author:reed# date:12/09/2012#  define environment variables

everyone to the site log analysis, common to a lot of different IP segments of the Baidu Spider, in order to facilitate better log analysis, the following list of Baidu different IP segments of the common spider some details, and so-called down the

Base Station Usage API description Mobile Unicom Base Station positioning Parameter description: Whether the name type must be described MCC Int (decimal) is the MCC Country code: China Code; 460 MNC int (decimal) is an MNC network type 0

Frequently-used commands echo, @, call, pause, and REM (TIPS: Use: instead of REM) are the most frequently-used commands for batch file processing. We started from them. First, @ is not a command, but a special identifier for DOS batch processing.

Sp_detach_dbDetach the database from the server, and you can choose to run update statistics on all tables before the separation. SyntaxSp_detach_db [@ dbname =] 'dbname'[, [@ Skipchecks =] 'skipcheck'] Parameters[@ Dbname =] 'dbname' Name of the

1. Echo commandEnable or disable the request echo function or display messages. If no parameters exist, the echo command displays the current echo settings.SyntaxEcho [{on | off}] [Message]Sample: @ echo off/ECHO Hello WorldIn actual application, we