Linux

First step: Prepare your Account[root@centos7 ~]#getent passwd mysql //查看有没有mysql账号（没有的话需要创建）[root@centos7 ~]#useradd -r mysql -s /sbin/nologin //创建系统账号 shell类型为nologin[root@centos7 ~]#getent passwd mysql

System version: contos7_64Kafka Introduction:1. Installing the JDKHttp://www.cnblogs.com/xxoome/p/7112637.html2. Download KafkaDownload page: http://kafka.apache.org/downloads.html2.1. DecompressionTar zxvf kafka_2. One-1.1. 0. tgz2.2. Start and

1. Commands with small R parametersCp-rRm-rfLs-r2. Commands with R parametersChown chmod3.MV CP who fastMv4. View commands help What do you think?XXX--helpSee Usage first5. What should I do if the leader asks you to open the Web interface of the

An installationOfficial website Download ISO installation file: https://www.centos.org/download/Then install it yourself.Two configuration networksA. Configuring dynamic IP 123 1)# vi

I. The SCP was rejected　The Server a command line uses SCP to transfer to Server B, such as:Scp-i id_rsa_125 file1 [email protected]:/home#ssh_exchange_identification:read:connection reset by Peer#lost connecti OnThis error message appears, view

Linux compositionMade up of kernel and rootfs.Single Core: (Process management, memory management, network management, drivers, file system, security features)/boot/vmlinuz-version-releaseAuxiliary pseudo-Root

W/uptime View system Overall load command04:38:05 当前系统时间up 7 min 启动7 分钟1 user 目前登录了几个用户，登录的用户可以从下面USER看到USER 显示登录的用户TTY 显示的是从网络登录还是本地登录From 登录的一源[email protected] 登录的时间 load average: 0.00, 0.01, 0.00这三个数值分别表示：1

#yum install-y tcpdump//Installation tcpdump#tcpdump-nn//-nn The first n is displayed numerically, and if you do not add N, the host name is displayed, plus two n will display the IP address and port number in a digital way#tcpdump-nn-i

There are a lot of files about SVN that have been windows for example, because the company did not have Windows server after a day of twists and turns finally the initial installation to learn about SVN. Some of the following experiences hope to

The SYSTEMCTL command is a system Service Manager directive that actually combines both the service and Chkconfig commands.　　1. Command format:systemctl [parameters] [services]2. Command function:SYSTEMD is a system and service Manager under Linux

Centos7 default Ifconfig command is not installed and requires Yum to install Net-tools package#yum install-y net-tools//After installation, you can use the Ifconfig command#ifdown ENS33//Turn off the ENS33 network card, only need to turn off a

DHCP (Dynamic Host Configuration Protocol) is commonly used in large local network environment, the main role is centralized management, assigning IP address, so that the host in the network environment to obtain the dynamic IP address, gateway

1) Compile and installAdvantages:Custom installation directory defaults to/usr/localOn-demand turn on functioncan be customized under certain circumstances do not need a network to select software versionDisadvantages:Need to find and experiment

0) Check bash running jobs by jobs1) Push bash job background by BG, push forward by FG2) Toptop-07:56:54 up 1:22, 2 users, load average:0.00, 0.01, 0.05//load average of last min, 5 mins and mins tasks:240 Total, 2 running, 238 sleeping, 0

First, NohupNohup time will be broken so it is recommended to use screenNohup Command &If the run succeeds just by default, the standard output is redirected to the current directory's Nohup.out file, and you can see the progress of the run by

inotifywait: Waiting for specific file system time (open, close, delete, etc.) to occur in the monitored file or directory, blocking after execution, suitable for use in shell scripts;Inotifywatch: collects monitored file system usage statistics,

The main content of this article: What is a process How the operating system organizes processes How process state is transformed (gives process state transition diagram) How the process is scheduled Talk about your view of

(1) NewNew folder: MkDir folder nameNew file: Touch file path/file nameDelete:rm–f filename Delete FileRM–RF FileName Delete Folder(2) renaming1 renaming a file named Abc.txt to 1234.txtMV Abc.txt 1234.txt2 renaming directory A to BMV A B3 move

In peacetime work, often hear the application process and thread concept, then what is the relationship between their two or different?One, in-depth understanding of the differences between processes and

TITLE:2018-1-16 Win7 Linux dual system removal Linux & Dual system installationTags: new, template, small book makerGrammar_cjkruby:trueCopyright (C) @2018 WidicFilename： File-function： Cre_ID: @ Widic 2018-1-16Mod_ID:1. Download