Experiment 1 Linux Common Commands and Shell Programming
I. Experimental Contents
a) When running the program on the command line, the Linux system searches a series of directories in the $PATH variable to find the corresponding files, writes a script to output all executable files in th ...
Posted on Sun, 04 Aug 2019 00:54:53 -0700 by importune
Links to the original text: https://www.cnblogs.com/rope/p/10859014.html
What is Egg?
Egg.js is an enterprise-level framework and application. It is hoped that Egg.js will breed more upper-level frameworks to help development teams and dev ...
Posted on Sat, 03 Aug 2019 03:58:01 -0700 by Residue
A customer feedback, when using binlog to do point-based recovery, often fails to correctly restore data (the probability is about 5%~10%).
The database environment provides MySQL 5.7.27 version of cascade replication topology (A->B->C), main library A provides write ...
Posted on Thu, 01 Aug 2019 20:37:55 -0700 by dougp23
In order to provide more abundant and powerful web application functions, it often needs the support of background database, web programming and other roles.
In general small and medium-sized enterprises, the most commonly used database is MySQL. MySQL is a truly multi-threaded, multi-user SQL database ...
Posted on Thu, 01 Aug 2019 20:21:38 -0700 by blyz
ansible 3rd playbook Conditional Judgment, Cycle and roles Hierarchical Management
1. ansible playbook's judgment, cyclic syntax:
In ansible playbook, when syntax can be used to make judgments and loops through with_items, with the following examples:
- hosts: websrvs
Posted on Wed, 31 Jul 2019 16:12:16 -0700 by abolmeer
This scenario requires storing qualified messages under EMQ X specified topics into the MySQL database. In order to facilitate subsequent analysis and retrieval, message content needs to be split and stored.
In this scenario, the device side reports the following information:
Subject: cmd/state/:id, in which ID represents ...
Posted on Wed, 31 Jul 2019 04:50:41 -0700 by Drace
The blogger is a self-taught Java, but even the basic knowledge of "Java from Initial to Proficient" has not been read. Because of the need of internship, it is necessary to develop a simple login and registration interface with JavaEE (J2E). Through powerful search engine and num ...
Posted on Mon, 29 Jul 2019 02:25:58 -0700 by cordoprod
MySql log files include error log, slow query log, transaction log, binary log, etc.
Mysql logs can be configured by command
1 show global variables like '%log%';
The results of implementation are as follows
Posted on Sun, 28 Jul 2019 05:40:09 -0700 by scuzzo84
net start mysql open service
net stop mysql closes the service
mysql -uroot -p(pwd) -h127.0.0.1 3306 -P
Link locality is abbreviated as: mysql-uroot-p
II. Basic Operation
1. Operating folders or libraries:
(The name of the repository cannot ...
Posted on Sat, 27 Jul 2019 23:29:40 -0700 by kimbeejo
- Restore content to start
Dynamic Programming Dynamic Programming
_The essence of a computer is a state machine. All the data stored in memory constitute the current state. CPU can only calculate the next state by using the current state (don't tangle with external storage such as hard disk, even if they consider that they just exp ...
Posted on Sat, 27 Jul 2019 07:49:15 -0700 by algarve4me