18 use of v-if combined with template tag in V-for

v-for cyclic number v-for can be used to cycle numbers. For example, if you want to cycle numbers 1-99, you can write them directly as follows. <span v-for="count in 99">{{count}},</span> In this way, you can quickly cycle out the value of 1-99 on the page. You can see this effect in the browser. <!DOCTYPE html> <h ...

Posted on Wed, 01 Dec 2021 21:55:46 -0500 by afrim12

Linux file permissions (password, user, group, file permissions) --- with detailed operations

Linux file permissions 1 user information The root user account is the administrator of the Linux system, and the UID assigned to it is 0. Linux system will create different user accounts for various functions, and these accounts are not real users. These accounts are called system accounts and are special accounts used by various servic ...

Posted on Wed, 01 Dec 2021 18:43:05 -0500 by pink

The difference between the Linux commands su and sudo

Introduction and main usage of su command The general usage of su is: su <user_name> perhaps su - <user_name> There is only one character difference between the two methods - there will be a big difference: If the - parameter is added, it is a login shell method, which means switching to another user < user_ After name & ...

Posted on Wed, 01 Dec 2021 18:16:10 -0500 by beaux1

MySQL database log, backup and recovery

catalogue Log type and function: 1.redo redo log 2.undo rollback log 3.errorlog error log 4.slow query log 5.bin log binary log 6.relay log 7.general log Log query           Importance of data backup Classification of database backup Common backup methods Actual operation Physical cold backup and recover ...

Posted on Wed, 01 Dec 2021 15:58:59 -0500 by jamesp

17 v-for circular arrays and objects and methods of object arrays

Haste makes waste, and stability makes for victory. When using Vue, loop is the most commonly used operation. Although we have briefly explained the use of v-for in the tutorial [introduction], it is not comprehensive. Next, we will use two articles to explain the specific use of v-for in detail. Method of v-for circular array <!DOCTY ...

Posted on Wed, 01 Dec 2021 12:31:19 -0500 by pages

grpc Practice II: environment construction and simple demo

Grpc Practice II: environment construction and simple demo 2.1 grpc environment installation 2.1.1 golang environment installation All the following tutorials and codes are demonstrated by golang code, so we need to install golang environment: download address: golang official website After installation, enter in your command line tool go ...

Posted on Wed, 01 Dec 2021 11:22:16 -0500 by melbell

Basic usage of Docker

Basic usage of Docker Docker architecture description Docker uses the C/S architecture. The docker client communicates with the docker daemon, which is responsible for building, running and distributing docker containers. Docker client and daemon can run on the same system, or connect docker client to remote docker daemon. Docker clients and ...

Posted on Wed, 01 Dec 2021 09:22:10 -0500 by Jeb.

CentOS7NFS service installation and configuration

System environment: CentOS Linux release 7 1, Installation Both nfs client and server install nfs utils package, and rpcbind is installed automatically. After installation, the nfsnobody user and group will be created. The uid and gid are 65534. # yum -y install nfs-utils 2, Configure port In addition to the fixed main program port 2049 a ...

Posted on Wed, 01 Dec 2021 08:55:26 -0500 by nodster

Linux basic learning notes

System bottom security control and its optimization method 1. Significance of users and their user groups catalogue System bottom security control and its optimization method 1. Significance of users and their user groups 1) Meaning of user existence 2) Significance of user group existence 2. User creation 3. User switching 1) User vie ...

Posted on Wed, 01 Dec 2021 08:34:09 -0500 by Ton Wibier

Linux - firewall, SELinux rules

1, Firewall firewall rules Function of firewall: release or block some services and ports 1. Simple operation of firewall # 1. View firewall status systemctl status firewalld # 2. Turn off firewall systemctl stop firewalld # 3. Turn on the firewall systemctl start firewalld 2. Direct rules for firewall # 1. View firewall released services fi ...

Posted on Wed, 01 Dec 2021 08:31:03 -0500 by shana