Linux command learning artifact! If you don't understand the command, explain it to you directly!

As we all know, Linux system has a lot of commands, and each command has a lot of uses. If you want to remember all the uses of all commands, it's probably an impossible task. In general, when we learn a command, either Baidu directly searches its usage, or man directly checks the lengthy help manual. Both of these can achieve our goals, but is ...

Posted on Mon, 02 Mar 2020 23:44:25 -0800 by ~n[EO]n~

Enterprise practice: batch deployment of multi version system based on Cobbler

Source: https://blog.51cto.com/scholar/1672176 Preface Operation and maintenance automation plays an important role in the production environment, especially in the face of hundreds, thousands or even tens of thousands of servers, it is just to install the operating system, if not through automation, ...

Posted on Fri, 28 Feb 2020 01:34:08 -0800 by vargefaret

Some understandings of forward and reverse proxy are attached with the implementation code of simple proxy

Catalog 1, Forward agent 2, Reverse proxy 3, Difference between forward and reverse agents 4, Implementation code of a simple agent 1, Forward agent Forward proxy, also known as the legendary proxy, works like a springboard. In short, I am a user, and I can't access a website, but I can access ...

Posted on Thu, 16 Jan 2020 21:20:11 -0800 by mligor

Primary ideas for scripting full-network backup

Article Directory Preparations: Deploy rsync service Server: First mileage: confirm software installation Second mileage: writing configuration files Third mileage: Create backup directory management user Fourth mileage: Create a backup data directory and modify the ownership group Fifth Mileage: C ...

Posted on Wed, 15 Jan 2020 20:01:25 -0800 by 2005

ARTS Week 17

Algorithms 15. 3Sum Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: The solution set must not contain duplicate triplets. Example: Given array nums = [-1, 0, 1, 2, -1, -4], A solution set is: [ [-1, 0, ...

Posted on Sat, 07 Dec 2019 08:50:46 -0800 by spamoom

MySQL: pro test backup strategy instance (online real backup case) recommendation

Xiaosheng blog: http://xsboke.blog.51cto.com If in doubt, please Click here The author will reply in time (or comment directly in the current article). -------Thank you for your reference. If you have any questions, welcome to exchange Have you ever worried about the backup of online database? Here is a complete backup ...

Posted on Sat, 07 Dec 2019 06:25:10 -0800 by Dilb

The whole network backup script of Web Cluster

Requirements: the specified directory or file should be packed to the local / backup directory with the local IP name, and the packed file should be MD5 hashed, then the hash result should be written to the md5.log file in the current directory, and then the packed file should be pushed to the backup server; the backup file 7 days ago should b ...

Posted on Wed, 04 Dec 2019 16:06:12 -0800 by Scottiebabes

ORACLE RMAN automatic backup and restore script design

In many cases, DBA s need to regularly back up the production environment as a whole and restore it to the test environment for developers to debug or test. If there is a large amount of data, the RMAN method is more efficient and time-saving. The following strategy is to deploy backup tasks in the production environment and restore the scrip ...

Posted on Tue, 26 Nov 2019 07:47:30 -0800 by furnissg

Rsync & inotify tools real-time synchronization

1. After deploying the rsync service according to the previous essay on rsync, you can start the deployment of inotify 2. Deployment and use of inotify ①. Check whether the system supports inotify [root@iZ25w1kdi5zZ ~]# ls -lsart /proc/sys/fs/inotify total 0 0 dr-xr-xr-x 0 root root 0 Sep 19 09:38 .. 0 -rw-r--r-- 1 root root 0 Jan 1 13 ...

Posted on Wed, 13 Nov 2019 12:10:37 -0800 by Hafkas

Network security Day08

3.2.1 Rsync 3.2.2 writing rsync scanner in Python 3.3 Redis Rsync Rsync introduction Rsync (remote synchronize) is a software to realize remote synchronization function. It can keep the original file's permission, time, soft and hard links and other additional information while synchronizing files. • rsync is not encrypted by def ...

Posted on Thu, 24 Oct 2019 00:55:03 -0700 by Ayien