Linux

mysql5.7 installation is a bit different from 5.6, this chapter mainly introduces the binary installation method.MySQL 5.7:https://dev.mysql.com/downloads/mysql/5.7.html#downloadsInstallationI downloaded the version is mysql5.7.22 Community

Original link: https://www.cnblogs.com/ggjucheng/archive/2012/08/19/2646466.htmliptables IntroductionNetfilter/iptables (referred to as iptables) constitutes a packet filtering firewall under the Linux platform, like most Linux software, this packet

1.rpm-qaList all installed RPM packageQuery for RPM package name packages are installed| Indicates that the output (string) is shifted to the back of the command processinggrep jdk means searching for strings containing JDK words in the current

Transferred from: http://blog.51cto.com/19055/11446001)/etc/profile will be executed when logging in.A global (public) configuration that reads the file when logged on, regardless of the user.(2)/ECT/BASHRC Ubuntu does not have this file,

The computer consists of: an operator, a controller, a memory, a input. So there is the address bus, data bus, control bus. In fact, in the machine the bus is multiplexed, a bus three functions.Address bus: Memory addressingData bus: Transferring

To suid only need to have a understanding on the line, do not blindly set, otherwise it will affect the stable operation of the system1, the temporary right to allow different groups to view each other do not create files[[email protected] ~]# chmod

Echo Output command'echo [选项] [输出内容]'选项'-e' 支持反斜线控制的字符转换Control characters?\a 输出警告音\b 退格键,也就是向左删除键\n 换行符\r 回车键\t 制表符,也就是Tab键\v 垂直制表符\0nnn 按照八进制ASCII码表输出字符,其中0为数字零,nnn为三位8进制数\xhh 按照16进制ASCII码表输出字符,其中hh是两位16进制数实例[[email protected] /]# echo -e "hel\bo"

Historical commandHistory [Options] [Historical command Save file]选项'-c'清空历史命令'-w'把缓存中的历史命令写入历史命令保存文件~/.bash_history[[email protected] ~]# cat .bash_history exityum -y install yumyum -y install wget…Invocation of the history command*)

Operational commands for Linuxexpr命令,对整数进行运算 > expr的运算必须用空格间隔开 > \* 表示转义字符 > 保持先乘除后加减,如果需要优先运算则需要加命令替换符 > 也可以对变量进行运算操作[[email protected] shell]# cat c.sh #!/bin/bash a=$1 b=$2 d=$a+$b c=`expr $a + $b` ?//对变量进行加法操作结果赋给变量c 注意添加`` e=`

One, iptables and firewalld comparisonIn the CentOS 7 system, the FIREWALLD firewall replaces the iptables firewall. In fact, iptables and FIREWALLD are not real firewalls, they are just firewall management tools or services that define firewall

Installing Tomcat on Linux can directly download tomcat directly on the Linux server via wget, or you can upload the local tomcat to the server. Since I downloaded Tomcat before, I uploaded it directly from the computer to the server.I am using a

Find and retrieve:File name lookup: Find. -name "test*" Find path Lookup type nameContent Search: grep "he*"./-R Find content for he (E has 0 or more) content paths together with all files in subdirectories. Note: the * in file name lookup is a

1 overviewThe system reads and writes files, such as the following kernel printing information, reports read and write a sector error. So how can we find which file to read and write through sector error?KERNEL:END_REQUEST:I/O error, Dev SDB, Sector

1.linux file system: All files and file directory tree resource management together constitute the Linux file system, so that the Linux operating system can easily use system resources2. Hard disk partition: The partition itself is not necessary, we

First, upload the Tomcat serverSecond, install Tomcat Server 2.1, unzip the Tomcat server compressed package2.2. Configure Environment variablesMake sure the JDK is installed under Linux, and how to install the JDK on Baidu Linux itself2.3. Modify

IPC for Linux system programming (Inter Processes Communication)First, the signal1. Generation of SignalsSoftware interrupt, asynchronous communication, Ctrl+c,kill function, kill command, hardware exception (segment error), software exception2. The

Executing scripts with crontab timingThe cron service is a timed execution service that can be added or edited with the crontab command to perform tasks that need to be timed:Crontab–e: Modify the crontab file, if the file does not exist, it will be

Run Python peach.py under the Peach folder./samples/helloworld.xmlTip Install 4suite-xml first.Prompted to install under the Dependences folder, two errors occurred. First time, I can't find the Python.h file.The workaround is to install

When it comes to Linux, when there is a firewall and selinux, we are not very convenient for some operations, such as the remote access of DNS and the operation of the HTTPD program, so we need some action to shut down the firewall and

First, why the log is split. 1.nginx logs are written to a file by default, and the file becomes more and more large.2. Individual log files are very inconvenient to view analysis.Second, simple analysis of log segmentation.whether it's Windows or