Article Introduction：The difference between shell commands and linux commands: 1. Shell is a script language that runs on the Linux system. It is a program written in C language, while linux commands are commands for managing the Linux system; 2. Shell can be repeated or batched You can execute some commands directly, or you can write repeated commands into a script for execution, while Linux commands require entering commands one by one.

2022-08-17 comment 0  12064

Article Introduction：The difference between dos commands and linux commands: 1. dos uses the copy command to copy files, and linux uses the cp command to copy files; 2. dos uses the move command to move files, and linux uses the mv command to move files; 3. dos uses the del command to delete files, and linux Use the rm command to delete files.

2022-05-07 comment 0  6322

Article Introduction：Vue3 is the latest Vue version. Compared with Vue2, it has been upgraded and improved in many aspects. One of the improvements is the directive function. The directive function is a new function in Vue3. It can be used to customize instructions to extend the functions of Vue3. What is a directive? Directives are a special component attribute provided by Vue that are used to add specific behaviors to templates. Directives can be thought of as common directives in AngularJS that operate on elements.

2023-06-18 comment 0  3381

Article Introduction：The function of the instruction register is to store instructions, decode instructions, execute instructions, and control instruction flow. Detailed introduction: 1. Store the instruction. When the computer retrieves an instruction from the memory, the instruction will be copied to the instruction register. The instruction register is responsible for temporarily storing the binary representation of the instruction; 2. Decoding the instruction. Once the instruction is stored in In the instruction register, the CPU can determine the operation that should be performed by decoding the contents of the instruction register; 3. Instruction execution. After decoding is completed, the CPU will perform corresponding operations based on the instruction contents stored in the instruction register, etc.

2023-09-04 comment 0  3266

Article Introduction：The Linux pipeline command is "|", which is used to connect multiple instructions. The output stream of the previous instruction will be used as the operation object of the subsequent instruction. The command format is "Instruction 1 | Instruction 2 | ...". The command's The latter instruction must be able to receive standard input stream commands in order to be executed. The pipeline command can only process the correct output of the previous instruction, but cannot handle the error output; the subsequent instruction of the pipeline command must be able to receive the standard input stream command before it can be executed.

2023-02-02 comment 0  7586

Article Introduction：There are five common instruction cache mechanisms: "instruction cache", "prefetch mechanism", "branch target buffer", "instruction queue" and "instruction reordering": 1. Instruction cache. When the processor executes instructions, it will Instructions are read from the instruction cache and stored in the instruction cache; 2. Prefetch mechanism, the processor predicts the instructions that may be needed and loads these instructions into the instruction cache in advance; 3. Branch target buffer, used to store the instructions predicted by the processor The target address of the branch instruction to speed up the execution of the branch instruction, etc.

2023-11-20 comment 0  1277

Article Introduction：This article will take you to continue learning angular and briefly understand the use of Directive instructions in angular. I hope it will be helpful to you!

2022-11-04 comment 0  1654

Article Introduction：The linux command is a command for managing the Linux system. There are two types of it in the system: 1. Built-in Shell command, which is recognized by the shell program and completed within the shell program. It is transferred into the memory when the system starts. It is a common command. Memory-resident; 2. External commands (file system commands) are programs outside the bash shell. DOS command refers to the command of DOS operating system, which is a disk-oriented operation command, mainly including directory operation commands, disk operation commands, file operation commands and other commands.

2023-02-14 comment 0  2309

Article Introduction：Hello everyone, I am Coke Linux System Log, a programmer who focuses on originality and is willing to share. This series of tutorials is continuously updated. You can search "IT Cola" on Momo to read it immediately. In reply to "E-Book", there are a large number of free books and materials that I have carefully selected for you. In the next blog, we explained the Linux help and user management commands. Linux decompresses zip files. For help commands, the man command can obtain help information about commands and configuration files. The help command can obtain help information for shell external commands. We can use which to distinguish which are shell external commands and which are external commands. And basically if we are not familiar with a certain command, we can use the command --help to view it more clearly.

2024-02-23 comment 0  856

Article Introduction：In vue, a directive is a special attribute (attribute) with the "v-" prefix. The value of the directive attribute is expected to be a single JavaScript expression, and the syntax is "v-directive:parameter="expression"". Vue acts on HTML elements, and directives provide some special features. When binding directives to elements, directives will add some special behaviors to the bound target elements; therefore directives can be regarded as special HTML features.

2022-08-26 comment 0  5588

Article Introduction：In golang programming, instruction setting is a very important operation. When executing code, instruction settings can affect aspects such as program efficiency, resource utilization, and security. Therefore, mastering the methods and techniques of instruction setting is of great significance for the development and optimization of golang programs. Golang's instruction set architecture In golang, the instruction set architecture is based on RISC (reduced instruction set computer) design. This is because the RISC architecture has great advantages in terms of fewer instructions, shorter instruction length, and simpler instruction rules.

2023-05-06 comment 0  701

Article Introduction：In the DOS command line, the choice command is used to wait for a period of time before the user enters an option. During the waiting period, the command will display a message telling the user which options can be selected and giving a time limit for the selection. The syntax is "CHOICE [/ C choices] [/N] [/CS] [/T timeout /D choice] [/M text]”.

2024-01-27 comment 0  1092

Article Introduction：Vue.js is a popular JavaScript framework that uses a data-driven approach to create interactive web applications. Vue.js provides many instructions in the documentation, among which the v-show instruction and the v-if instruction are two common instructions. Although these two instructions look similar, their purpose and implementation are somewhat different. In this article, we will discuss the difference between v-show instruction and v-if instruction in detail. 1. v-show instruction v-show instruction is Vue.js

2023-06-20 comment 0  1794

Article Introduction：Dos command list commonly used commands: (1) View directory content command DIR (2) Specify executable file search directory PATH (3) Create directory command MD (4) Open the specified directory command CD (5) Delete the currently specified subdirectory command RD (6) Change the current drive letter command C: (7) File copy command COPY (8) Display text file content command TYPE (9) Change file name command REN (10) Delete file command DEL (11) Clear screen command CLSPS current page CTRL+F searches for keywords and jumps directly to DOS commands. Special commands repeat the last entered command. You can use the F3 key to complete it. At the same time, there is a doskey command recorder under DOS. Execute d on the command line.

2023-05-15 comment 0  1891

Article Introduction：What is a custom directive? This article will give you a detailed understanding of the custom instructions in the essential knowledge for getting started with Vue, introduce private custom instructions and global custom instructions, and see how to dynamically bind parameter values ​​​​for custom instructions. I hope it will be helpful to everyone. !

2022-06-02 comment 0  5261

Article Introduction：Instruction system The instruction system is the language system of computer hardware, also called machine language. It refers to the collection of all instructions that the computer can execute. It describes all the control information and "logical judgment" capabilities in the computer. The instruction systems of different computers contain different types and numbers of instructions; they generally include arithmetic operation type, logical operation type, data transfer type, judgment and control type, shift operation type, bit (bit string) operation type, input and output Type and other instructions.

2022-07-18 comment 0  8241

Article Introduction：Commonly used instructions in vue include v-if and v-show instructions, v-for instructions, v-bind instructions, v-on instructions, v-model instructions, v-text instructions, v-html instructions, v-cloak instructions, etc. Detailed introduction: 1. v-if and v-show instructions, used to conditionally render DOM elements; 2. v-for instruction, which can be used to traverse arrays or objects and generate corresponding DOM elements based on each element. ;3. v-bind instruction, etc.

2023-08-02 comment 0  5249

Article Introduction：nohup is a commonly used command in Unix and Unix-like systems. It is used to run commands in the background and redirect the output of the command to a file to keep running even after the user logs out or the terminal is closed. Detailed explanation and usage of the nohup command: "nohup command [parameters] [input file] [output file]", where the command is the command to be run in the background, the parameters are the options and parameters of the command, and the input file is the input file of the command , the output file is the output file of the command.

2023-10-25 comment 0  4251

Article Introduction：For Linux enthusiasts and developers, the command line is an extremely important tool. However, in the process of frequent use of the command line, we will inevitably make input errors or forget the commands we have used before. At this point, Linux command history can come in handy. It allows us to easily find and reuse previous commands, greatly improving our work efficiency. Now, let’s explore this powerful tool together! The underlying HISTSIZE variable value of history sets the number of commands saved in the history list. By default, this value is 500. These previously issued commands (called the history list) are stored in a history file. Its default location is ~/.bash_histo

2024-02-13 comment 0  1311

Article Introduction：Learn Directives in Vue3 and extend the custom instruction function Vue is a popular JavaScript framework for building interactive web applications. Vue provides many powerful features, one of which is directives. A directive is a special attribute used to add specific behavior or style to an HTML element. Vue3 introduces some new features that can more flexibly extend and customize directive functions. This article will introduce how to use Vue3

2023-09-09 comment 0  1788