Linux permissions

Linux permission permission 4 permission concept 5 Linux user classification Linux 10 Linux file attribute Linux 30 permission representation method 145 file access permission related setting method 163 https://img blog.csdnimg.cn/4615e1a60d2a45a2b83...

2022-11-24 | Australopithecus north | 976 views

HTML + CSS + javascript + jquery + bootstrap responsive travel tourism platform website template (page 14)

*‍*Student HTML static webpage basic level production*‍*, the page layout is clean and concise.Using HTML+CSS page layout design, the source code of web design homework for college students, this is a good tourism webpage production, with smart pictu...

2022-11-24 | web site construction | 980 views

How to quickly solve Mybatis exception: Invalid bound statement (not found)

Contents 1. Problems encountered %E4%B8%80%E3%80%81%E9%81%87%E5%88%B0%E7%9A%84%E9%97%AE%E9%A2%98 2, Analysis ideas %E4%BA%8C%E3%80%81%E5%88%86%E6%9E%90%E6%80%9D%E8%B7%AF 1. Mapping file: 1%E3%80%81%E6%98%A0%E5%B0%84%E6%96%87%E4%BB%B6%EF%BC%9A 2. Test...

2022-11-24 | Mao Xishi | 145 views

In-depth analysis of why deep learning is done with python instead of java or c++

Preface 1. Python is an interpreted language, which makes writing programs more convenient.For example, to write a matrix multiplication in a compiled language such as C, you need to allocate operands (matrixes), allocate memory for the result, manua...

2022-11-24 | Old programmer's favorite hobby | 478 views

When using future under linux, an error is reported undefined reference to `pthread_create‘

The error is like this: FAILED: test gdb : /usr/bin/g++ g CMakeFiles/test gdb.dir/gdb main.cpp.o o test gdb : /usr/bin/ld: CMakeFiles/test gdb.dir/gdb main.cpp.o: in function std::thread::thread std::future base::Async state impl std::thread::Invoker...

2022-11-24 | Xeon_CC | 431 views

Netty series (1): Springboot integrates Netty, custom protocol implementation

Netty is a java open source framework provided by JBOSS and is now an independent project on Github.Netty provides an asynchronous, event-driven network application framework and tools for rapid development of high-performance, high-reliability netwo...

2022-11-24 | crocodile | 501 views

Netty series (2): Solution to Netty unpacking/dipping problem

The previous article talked about Netty series (1): Springboot integrates Netty, implements custom protocols Bai/article/details/127984963 , this article talks about some unpacking/dipping issues.Unpacking/sticking packet problem TCP is a byte-stream...

2022-11-24 | crocodile | 871 views

Java knowledge needed in work (AQS articles)

AQS is a frequently asked question during interviews, so today we will briefly understand what AQS is.What is AQS?Let's briefly talk about what AQS is. AQS actually refers to the AbstractQueuedSynchronizer class in Java. This class is under the java....

2022-11-24 | When can I earn 6000 yuan | 969 views

Android App development used in network communication okhttp download and upload pictures, documents and actual combat, more detailed implementation (user registration information upload source attached)

需要源码请点赞关注收藏后评论区留言并且私信~~~ 一、使用okhttp下载图片 okhttp不但简化了HTTP接口的调用过程,连下载文件都变得简单了,对于一般的文件下载,按照常规的GET方式调用流程,只要重写回调方法onResponse,在该方法中通过应答对象的body方法即可获得应答的数据包对象,调用数据包对象的string方法即可得到文本形式的字符串,下面以下载网络图片为例,位图工具BitmapFactory刚好提供了decodeStream方法,允许直接从输入流中解码获取位图对象 效果如下...

2022-11-24 | shows swoller | 214 views

Install mysql under Linux

Download Enter , you can download the MySQL corresponding to the system environment through the drop-down box, and you can download the historical version of MySQL by selecting Archives.​ Or use wget to download: wget 5.6/MySQL 5.6.22 1.el6.i686.rpm ...

2022-11-24 | share a drink no | 624 views

Install lrzsz under Linux

Manually compile and install 1. Download the installation package, wget 0.12.20.tar.gz 0.12.20.tar.gz or upload the downloaded installation 1. cd /usr/local/src/ 1. mkdir lrzsz 1. cd lrzsz/ 1. Decompression: tar xvf lrzsz 0.12.20.tar.gz 1. cd lrzsz 0...

2022-11-24 | share a drink no | 348 views

Install JDK under Linux

JDK download address: Create installation directory mkdir /usr/local/src/java Copy and upload jdk tar package to the directory and decompress tar xvf jdk 7u71 linux i586.tar.gz Copy configuration environment variables: ① vi /etc/profile ② at the endA...

2022-11-24 | share a drink no | 225 views

Detailed explanation of Linux top command

Top command was used under Linux performance analysis tools, can real-time display system resource usage status of each process.Top is a dynamic display process, that is, the current state can be constantly refreshed by user keys.If at the front desk...

2022-11-24 | share a drink no | 751 views

Redis Deep Adventure: Core Principles and Application Practice

Brochure introduction https://img blog.csdnimg.cn/img convert/004eb6a2242b9b95b50b1760ce19f325.webp?x oss process=image/format,png Redis is the most widely used middleware in the storage system of the Internet technology architecture, and it is also ...

2022-11-24 | SYBH. | 499 views

SpringBoot Scenario Development Generalist Growth Manual

Brochure introduction https://img blog.csdnimg.cn/img convert/0d9b70d920d07e87e097f7b1c93f0206.webp?x oss process=image/format,png The power of SpringBoot The power of SpringBoot is self-evident, and its underlying SpringFramework powerful IOC contai...

2022-11-24 | SYBH. | 941 views

Detailed explanation of Linux rpm command

There are two types of rpm executable installation packages: binary package (Binary) and source code package (Source).The binary package can be installed directly on the computer, while the source code package will be automatically compiled and insta...

2022-11-24 | share a drink no | 315 views

The configuration in the idea starts the web project through tomcat

Steps to configure a Tomcat web project 1. Select Project to set jdk and compile output path 2. Select Add Web in Modules and set the corresponding web.xml path 3. Add dependencies 4. Facets 5. Artifacts 6. SDKs 7. Click to add tomcatConfiguration 8....

2022-11-24 | share a drink no | 350 views

[Mysql] mysql lock waits for Lock wait timeout exceeded; try restarting transaction

/ Query the global wait time for transaction lock SHOW GLOBAL VARIABLES LIKE 'innodb lock wait timeout'; / Set the global wait time for transaction lock timeout SET GLOBAL innodb lock wait timeout=100; / Query the current session wait time for transa...

2022-11-24 | Uncle Cthulhu | 916 views

[JAVA] Two ways to read configuration files: ResourceBundle and Properties

Above code: package com.construn.vehiclenetty.util; import java.io.IOException; import java.io.InputStream; import java.util.Properties; import java.util.ResourceBundle; // / / Created with IntelliJ IDEA. // @author: zhangenke / @Date: 2018/9/25 on 5...

2022-11-24 | Uncle Cthulhu | 951 views

[JAVA] springboot multi-environment packaging

1. Above picture, directory structure https://img blog.csdn.net/20180817110127703?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzE3MjEzMDY3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA/==.0dissol2profiles System environment switching dev is the dev...

2022-11-24 | Uncle Cthulhu | 186 views