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TCP protocol stack ESP uses lwIP as embedded TCP/IP protocol stack support lwIP is a set of IP protocol stack implemented in C at MCU level, which can run on bare metal / RTOS / Embedded Linux. Lexin provides relevant porting packages for ESP32 For relevant contents, please refer to LwIP library functions, which are supported in LwIP and ESP ...

Writing script rules 1. Declaration interpreter #!/bin/bash bash benefits: history, tab, pipeline, redirection, alias 2. Notes 3. Code 1. Write a script to create a user, enter the user name and password, enter the user name as empty, and exit the script #! /bin/bash read -p 'Please enter the user name you want to create' a [ -z $a ] &amp ...

preface    in recent days, I have taken time to add several new functions to the code generator (it is expected to be released tonight). At present, it supports postgresql database, HikariCP connection pool and swagger2 (there is a link to the generator at the end of the article. Friends who like it can download it for free forever. ...

Learning objectives and contents 1. Be able to understand the purpose of reading and writing separation 2. It can describe the common implementation of read-write separation 3. It can realize the separation of reading and writing through the project framework configuration file 4. It can realize read-write separation through midd ...

preface Through the introduction in the previous section, we can calculate the camera motion, but we don't know the specific position of feature points in space. In monocular SLAM, we cannot obtain the depth information of pixels only by relying on a single image. We need to estimate the depth of map points by triangulation. Triangulation Tr ...

preface Tip: Here you can add the general contents to be recorded in this article: For example, with the continuous development of artificial intelligence, machine learning technology is becoming more and more important. Many people have started learning machine learning. This paper introduces the basic content of machine learning. Ti ...

Click Redis installation Make the file have miscellaneous attributes chmod a+x /etc/init.d/redis Crond service related commands( reference resources) crond service To install crontab: yum install crontabs Service operation instructions: /sbin/service crond start //Start service /sbin/service crond stop //Shut down service /sbin/se ...

RH358 accessing block based networked storage – automated configuration of iSCSI initiator This section describes how to use Ansible to connect iSCSI storage and management. RH358 column address: https://blog.csdn.net/qq_41765918/category_11532281.html 1. Use Ansible to connect iSCSI Targets Use ansible open_ The iSCSI m ...

Ubuntu18.04 install and build hadoop-3.3.0 cluster Reference blog: https://blog.csdn.net/sunxiaoju/article/details/85222290?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162443354216780261915061%2522%252C%2522scm%2522%253A%252220140713.130102334 …%2522%257D&request_ id=162443354216780261915061&biz_ id=0&utm_ med ...

Upgrade linux system to OpenSSH, CentOS7x or above, and ssh to version 8.6p1 1. If the linux system has no other back-up platform that can backup snapshots, you need to start telnet first to prevent ssh from crashing and unable to log in to the system. See resources https://www.cnblogs.com/wangyang0210/p/12552040.html . The telnet tutorial is ...