Tag:command

  • Omapl138 making SD card boot media and reloading Linux system

    Time:2020-7-13

    Making SD card boot disk by omapl138 and reloading Linux system The SSH system of the omapl138 platform of Chuang long is broken. It is still difficult for me to transplant openssh again. I have no choice but to reload the omapl138 system. According to the document “SD card boot disk production” given by Chuang […]

  • Redis transactions

    Time:2020-7-13

    1、 What is it Multiple commands can be executed at a time, which is essentially a set of commands. All commands in a transaction are serialized,It is not allowed to be inserted serially 2、 What can I do In a queue, one-time, sequential execution of a series of commands 3、 Sample demonstration Normal execution 127.0.0.1:6379 […]

  • Using docker in wsl2

    Time:2020-7-13

    Link to original text Wsl2 is a Linux based on Hyper-V virtualization, so I want to run docker in WSL. When I installed docker happily, I found that it could not be started because the process with PID of 1 was not SYSTEMd, but init, which made me a vegetable chicken. After a search, it […]

  • Linux deployment. NETCORE site uses supervisor for managed deployment

    Time:2020-7-13

    preface The. NETCORE site was finally deployed on Linux, but this site is “fragile.”. When my SSH connection is closed or I want to execute other commands on the current connection, I have to close the dotnet site executor. This is obviously not the effect I want to achieve. Fortunately, I know that there are […]

  • Linux system management command

    Time:2020-7-11

      View how commands are used Help list common shell names MKDIR — help lists the usage of the specified command (MKDIR) (parameter)     Command history Direction key up a command Key down next command     Clear the screen Clear just opens a new page downward, and you can still see the previous […]

  • Windows builds the flash development environment

    Time:2020-7-11

    This paper introduces how to build Python + Flag development environment from scratch under windows. Installing Python 2.7 visit https://www.python.org/ Enter the download page to download the Windows version of Python 2.7 series. After installation, you need to add the python related path to the path environment variable (if theD:\Python27): D:\Python27 D:\Python27\Scripts Install setup tools […]

  • Build a front-end debugging scheme based on IOS simulator

    Time:2020-7-11

    Author: imyzf This paper will introduce the principle of automatic control IOS simulator, and provide help for the development of front-end debugging scheme based on IOS simulator. When we develop front-end pages in IOS app, there is a big pain point. The page cannot be debugged with Safari inspector and other tools. When we encounter […]

  • Master slave replication of redis

    Time:2020-7-10

    1、 What is it Master slave replication: after the host data is updated, it is automatically synchronized to the master / slave mechanism of the standby machine according to the configuration and policy. The master mainly writes and the slave mainly reads 2、 What can I do Read write separate disaster recovery backup 3、 How […]

  • [summary] redis

    Time:2020-7-10

    1、 Overview of redis 1. NoSQL concept NoSQL: not only SQL. Non relational database, as a supplement to relational database 2. Concept of redis A key value pair database developed by redis (remote dictionary server) C language. Single QPS (reads per second) 5W+ 3. Redis data type 1.string (1) Set key value add / modify […]

  • Redis location

    Time:2020-7-10

    The biggest feature added in redis 3.2 is the support for Geo (geographic location) In the current business, the map aspect is to call Gaode API (cloud image), and the request will be delayed. However, redsigeo can find the nearby terminal and measure the linear distance between two points (with error) 1. Geoadd: add the […]

  • How to manage network efficiently with Linux command line?

    Time:2020-7-9

    preface In our daily work, the Linux server operating system that we often use, whether it is to view network equipment information, manage network interface, download files, debug network problems or view network statistics, can be completed with commands under the terminal. ifconfig / ip a The command ifconfig is similar to IP a, which […]

  • Analysis of restore of redis command

    Time:2020-7-9

    Grape Command syntax Command meaning: deserialize the given serialization value and associate it with the given key. Command format: RESTORE key ttl serialized-value [REPLACE] [ABSTTL] [IDLETIME seconds] [FREQ frequency] Command actual combat redis> DEL mykey 0 redis> RESTORE mykey 0 “\n\x17\x17\x00\x00\x00\x12\x00\x00\x00\x03\x00\ x00\xc0\x01\x00\x04\xc0\x02\x00\x04\xc0\x03\x00\ xff\x04\x00u#<\xc0;.\xe9\xdd” OK redis> TYPE mykey list redis> LRANGE mykey 0 -1 1) “1” […]