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File common commands create a file touch Copy file cp file1 file2 //Copy file1 in the same directory and name file2 cp file1 file2 dir //Copy file1 and File2 to dir directory cp -p //Move the file and save all the original information Move (rename) file mv a b //Move to local and rename mv a b dir //Move a and b to di ...

1. Introduction to confluent platform The Confluent Platform is a comprehensive event flow platform that enables you to easily access, store and manage data in the form of continuous real-time streams. Confluent by Apache Kafka ® Built by the original creator of Kafka, it expands Kafka's advantages through enterprise level functions a ...

1 file stream There are three kinds of input / output streams in Linux shell: standard input stream, standard output stream and standard error stream. Each stream has a file descriptor, a commonly used abbreviated name, and a commonly used default device (this is interesting). Keyboard input (the default device) is actually sending input to th ...

1, Foreword 1.1 LNMP overview LNMP refers to a group of free software acronyms commonly used together to run dynamic websites or servers. L refers to Linux, N refers to Nginx, M generally refers to MySQL, MariaDB, P generally refers to PHP, Perl or Python. 1.2 LNMP introduction LNMP represents the website server architecture of Nginx+My ...

Installing NS3 with bake under Ubuntu ns3 Let me have to love, first contact ns3，I hope to study and discuss with my classmates! [note] refer to the NS official website for the following operations: https://www.nsnam.org/wiki/Installation#Installation 1) Platform selection Choose Ubuntu here: Depending on the package download, because th ...

1.inotify+rsync If you want to synchronize data regularly, you can add rsync to the scheduled task at the client, but the synchronization time granularity of the scheduled task can not meet the requirements of real-time synchronization. Inotify file system monitoring mechanism is provided after Linux kernel 2.6.13. Real time synchronization ca ...

Create a server to build an intranet penetration server After the project is developed, how to create a new server and deploy the project to the server? This requires the installation of some basic tools, such as jdk, maven and Jenkins to realize automatic deployment; In addition, you can build some auxiliary tools, such as nexus(maven private ...

Reprint notes: http://www.cnblogs.com/tolimit/ summary Recently, I was looking at memory recycling. The synchronization of memory recycling is very complex. Then I thought that the synchronization relationship in the process of page migration without memory defragmentation is so complex. I looked at the source code of page migration with curi ...

Steps for installing MySQL database in CentOS7 MySQL database installation Download wget command Delete the installed MySQL service Install MySQL installation package Possible problems Question one Question two MySQL database configuration Get temporary password ·Log in to MySQL Change Password Modify MySQL default code Simp ...

Diary: June 12, 2021 16:55:42 Diary: it's 15:04:04 on June 12, 2021 Diary: it's 07:04:28, June 13, 2021. I've been thinking about it all night. Due to dependency problems, I installed Python 3 6 frequent failures. In order not to repeat the actions, the following dependencies are provided: apt-get install -y sqlite* zlib* arm-linux-gnueabihf ...