1. Disk array (Redundant Arrays of Independent Disks, RAID) means “a redundant array of independent disks”.
A disk array is composed of many cheaper disks, combined into one in the form of ha
Tag: linux
Linux CentOS7 installed Java
1, http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
First go to download the linux jdk corresponding to java.
2. Use the ftp tool to upload to the /usr directory
Application process monitoring under Linux
Two ideas:
First, execute the monitoring script regularly
Use the crontab that comes with centos to execute the status.sh script regularly as needed.
#!/bin/bash
status=$(ps
LINUX basic article
One, the type of user
1. root administrator: all permissions (rwx)
2. file owner (u): who created Who owns
3. Main group (g): user group AAA {A1,A2}
4. Other users (o): does
LINUX (CENTOS) Automatically performs script (rc.local)
1. There are many ways to boot Linux. For example, I set mysql boot to start as: chkconfig –level 35 mysqld on
Second, let’s talk about booting through the rc.local file:
1 , First cre
How to implement password login in Linux
The normal process of logging in to mysql is generally to execute the following command:
mysql -uroot -p
and then enter the password. In the local linux system, if you want to automatic
Linux network programming 2, TCP connection API
First, server side
1, create a socket:
int socket(int domain, int type, int protocol);
domain: Specify the protocol family, usually AF_INET.
type: Specify the socket type, a
Create import export of Linux database and some basic instructions
First check mysql related directories under linux
Execute query SQL< /p> mysql>show variables like ‘%dir%’;
datadir is the data path
The running path is determined, and the impo
Linux Foundation – Process and Service (1)
Process in Linux: an executable running instance that has been started
1, PID: process ID (each new process has a unique PID)
3, any process can create a child process
4, above re
Linux07 – Install MySQL
①Check the work CentOS6 rpm -qa|grep mysql or rpm -qa | grep mysql
If mysql-libs exists The old version package is as follows:
must be Perform uninstallation! ! ! Uninstall command: