Programmer Group

process Processes are also called tasks in linux. For user space, a process is an instance of program execution.A process can be compared to a human individual: there is only one parent process and there can be multiple child processes; there are more or less valid lives; it takes on certain functi ...

Android source compilation Before compiling the source code, you need to do some preparation operations. The detailed steps are as follows: 1. Install JDK. Google requires JDK 1.8 to compile the latest version of source code 1) . download JDK1.6 at: http://download.oracle.com/otn/java/jdk/6u45-b06/jdk-6u45-linux-x64.b ...

Total s panoramic camera of ubuntu system is transformed by ROS image Following a blog post, after the Theta S camera was connected to the ROS system, the image matrix was published on the / image_raw topic. Let's start the file libuvc_camera.launch in the previous blog. At this time, the image has be ...

Multithreaded concurrent programming for C++11 (2) The epidemic has reached 3w+, and we hope to end it soon. Based on the threading concepts learned in the previous section, I started to learn more about multi-threaded programming in the new standard of C++11. C++11 introduced five header files: atomi ...

[background] A few days ago, due to loose power plug and other reasons, frequent power failure; At the same time, aoteng is used for caching. After one day's restart, the virtual machine will not be able to start. There should be something wrong with the hard disk. But because of the power proble ...

Preface "Delete library and run" is a topic that programmers often talk about. Today, I will teach you how to delete!Library!Run!Road! Just kidding, the topic of this article today is how to use Mysql's built-in Binlog log to recover mistakenly deleted data. After reading this article, you ...

** Installation and configuration of Fastdfs in Ubuntu environment ** FastDFS [1]: Contents: I. Preface 2, FastDFS introduction 3, FastDFS download and installation 4, Configure tracker and storage Five, test Six, summary1, Foreword: This paper implements the installation and test of FastDFS System en ...

Sometimes you need to deploy multiple Tomcat on a server, and distinguish them through different ports, such as reverse proxy. But I don't want to simply copy tomcat, which is not convenient for future upgrade or management. At this time, I need to configure a single machine with multiple instances o ...

Preface Github Actions official document (the general entry of all the official documents below) gives a detailed description of many details, but if you are the first time to contact, you see a lot of details, and you don't know what they are, so you will forget them soon. This article, from the code ...

1. ubuntu 18.04 After the Ubuntu 18.04 AMD64 corresponding to the virtualbox is installed, the startup of virtualbox does not respond. After a flash, the startup fails 2. Direct command line start Find the command cd /usr/bin Start / usr / bin $. / VirtualBox WARNING: The vboxdrv kernel module is not loaded. Either the ...