Linux

Installing mysql8.0 under CentOS Download MySQL $ wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-8.0/mysql-8.0.4-rc-linux-glibc2.12-x86_64.tar.gz Extract $ mysql TAR-ZXVF

Set port promiscuous mode: ifconfig eth0 PromiscSet promiscuous ifconfig Eth0-promisc cancel promiscuousThere are 4 modes of network card operation, namely:Broadcast (broadcast) modeMulticast (multicast) modeUnicast mode (Unicast)Promiscuous mode

1. Start the system and select the second option and press the E key to enter edit mode2. Edit add at end of Linux16/vmlinuzinit=/sysroot/bin/sh3. Press CTRL +x to start the shell4. Mount the file system in writable mode:mount+o remount，rw /sysroot5.

1, Tailf Mywork.log | grep--line-buffered finduserlist Real-time tracking log, here is the Finduserlist this method is run, it will print out its logs, used to track the specific log run. --line-buffered is a line of buffers that can be used for

Allow other machines to ping through firewallsIptables-a input-p ICMP--icmp-type echo-request-j ACCEPTIptables-a output-p ICMP--icmp-type echo-reply-j ACCEPTThe following is the setting of the firewall native ping other machine can ping the

renaming, creating, deleting, modifying, and saving files under LinuxFirst, renaming (renaming)Linux commands for renaming files are MV commandsMV command to rename a file or directory or to move a file from one directory to another. This command is

Git is an open source distributed version control system that can efficiently and rapidly handle project versioning from very small to very large. And the foreign GitHub and the domestic coding are the project's hosting platform. But when it comes

postfix邮件服务器★ Modify the MTA (default message transfer agent) command ____ to send mail:Alternatives--config MTA★ Check that the MTA is set up successfully:Alternatives--display MTABuild the environment: centos6.9;[Email protected] ~]#

DNS: Domain name resolution, also known as a record, CDN serverConfiguration file Location:Vi/etc/resolv.confAnalytic principleDNS is like an upside down tree, fixed point is dot. www.baidu.com ==> www.baidu.com. There's actually a point

Install OH-MY-ZSH installation zsh under Ubuntusudo apt install zshInstall git (if your system does not bring your own)sudo apt install gitInstalling OH-MY-ZSHsh -c "$(curl -fsSL https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

Use the Ifconfig command to view the network interface address.    -a :  Show all network interface    -s : Show only summary information for network interfaces .  use the hostname command to view or modify host names. Use the route command to view

Redhat6.5 Virtual machine configuration nic1. Turn on the virtual machineRight-click and select "Open in Terminal"The following interface appearsThere are no C-drives, D-drives, e-disks in the Linux system. He was made up of documents,To connect an

Linux Root has the best permissions, through the UID to distinguish the user's permission level, the root UID is 0, indicating that the user has the highest level of privilege, that is, the administrator level, other users, the UID is incremented;

Describe:1) All documents (including hardware); All resources exist as files on Linux, including the way hardware devices (device files) are communicated. 2) consisting of a single small program for many purposes; A command to complete

Set Run levelView boot load levels: 7 Levels Specification Scenario default is 3Cat/etc/inittab-- system boot Loads the file, you can set the run level # Default RunLevel. The runlevels used are:: Anti-quote, Tab # 0-halt (do not

Lock system Critical files1. Password, account file chattr +i /etc/passwd /etc/group /etc/shadow/etc/gshadow/etc/inittab locking: chattr +i /etc/ passwd file cannot be deleted, cannot be changed, cannot be moved view lock:

1. Download the JDK:Http://www.oracle.com/technetwork/java/javase/downloads/index.html2. Unzip:2.1 # Mkdir/usr/local/java2.2 # tar ZXVF jdk-8u171-linux-x64.tar.gz-c/usr/local/java/　　3. Configure Environment variables3.1 # Vi/etc/profile3.2 File

Adjusting system kernel ParametersKernel Optimizations: Linux systems (kernel + shell + applications)System kernel parameter tuning for business service applications (mainly/etc/sysctl.conf files)1. Vim/etc/sysctl.conf2. Sysctl-p modified

Program boot-up configuration file (/etc/rc.local)# system LevelNTSYSV # Graphical interface setup chkconfig (/ETC/INIT.D/SSHD) processing boot-up files# User Level# Write/etc/rc.local (recommended, typically as an enterprise server file, Linxu

System version:[Email protected] scripts]# cat/etc/redhat-releaseCentOS Release 6.9 (Final)Previous versions of Python:[[email protected] scripts]# pythonPython 2.6.6 (r266:84292, 18 2016, 15:13:37)[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on