Programmer Help

Here to show you a simple interrupt program in Linux 1, View interrupt The common application of interrupt is in the driver, such as our keyboard and mouse. Every time we click, an interrupt will be generated, so that the computer can recognize it. The experiment is to virtualize a device, register the device in the system, and then use the i ...

1. Download MySQL installation package Using Huawei image download, the download speed will be faster. The following is the link of Huawei image: https://mirrors.huaweicloud.com/mysql/Downloads/MySQL-8.0/ The version I selected is 8.0.27, which can be downloaded   mysql-8.0.27-linux-glibc2.12-x86_64.tar.xz   file     2. Upload the in ...

1. Foreword Recently, the linked list structure is needed to write code. It happens that the public library has information about the linked list. At first glance, I feel a little fresh. It is different from the linked list structure I saw before. There are only precursor and successor pointers, but no data fields. Later, looking at the code c ...

COW mechanism Docker image is composed of multiple read-only layers. When the container is started, docker will load the read-only image layer and add a read-write layer at the top of the image stack. If the running container modifies an existing file, the file will be copied from the read-only layer below the read-write layer to the read ...

1. Introduction to VIM Editing tools in Linux: vi, vim, emacs, gedit vi is the default text editor installed on Linuxvim is an upgrade of vicentos 7/8 minimum installation, vim is not installed by default Yum install/remove vim-y install and uninstall software Coding issues wiidows: Notepad recognizes vim's text with a line break symbol t ...

Linux device driver learning notes - Advanced Character driver operation chapter - Note.3[ioctl interface] When transmitting data between the application layer and the kernel layer, for example, if only 1 and 0 are used to control the operation of LED lights on and off, there are many unstable factors. One byte of data may be changed or lo ...

01. Linux Environment Variable Configuration When you customize software installation, you often need to configure environment variables. The following list shows how to configure environment variables. The environment for all the examples below is illustrated as follows: System: Ubuntu 14.0 User name: uusama MySQL environment variable p ...

Pipe command pipe 1. The pipeline command only processes the standard output, and the standard error output will be omitted. 2. The pipeline command must be able to accept the data from the previous command as standard input to continue processing Select the commands cut and grep After analyzing a piece of data, take out what we want. Or take ...

1. Principle Cmake is a cross platform compilation tool, which is more advanced than make and is much more convenient to use. Cmake mainly writes CMakeLists.txt file, then uses cmake command to convert CMakeLists.txt file into makefile file required by make, and finally uses make command to compile source code to generate executable program or ...

rpm -qa | grep vim // See what packages vim commands are in appear vim-minimal-7.4.160-4.el7.x86_64 yum install -y vim* //Install vim related packages rpm -qa | grep vim see HADOOP learning notes 1, Install virtual machine (CentOS) 2, Modify host name (host name of current virtual machine) 1. View the current host name Command: hos ...