Linux

Linux NetworkMaking a Swap partitionswapon-s Viewing the active state of the partitionfree-m View partition information in M units Swapoff to close an active partition mkswap making swap partitionsNetwork configurationifconfig (View the active NIC

How to do basic optimization after installing Linux system? 1, Yum Source 2, SELinux3, close firewall 4, thin boot service 5, use sudo to manage files 6, Chinese character set display 7, Time server synchronization 8-9, SSH remote connection 10,

1. Use the cat command to merge the files vertically:1) Master the vertical merging of files using the cat command:A) For example: Use the cat command to vertically merge the three files of Baby.age, baby.kg, and baby.sex into a baby file:Cat

user and passwd filesfeatures of the/etc/passwd file/etc/passwd file specific meanings for each fieldShadow Filefeatures of the/etc/shadow file/etc/shadow file specific meanings for each fieldgroups and group filesfeatures of the/etc/group

What is continuous integration: http://www.ruanyifeng.com/blog/2015/09/continuous-integration.htmlBenefits of Continuous Integration: Https://zhuanlan.zhihu.com/p/20589465?columnSlug=jishuqushiI have been before the company are entrepreneurial

About Docker:Docker is an open-source engine that makes it easy to create a lightweight, portable, self-sufficient container for any application. Developers who compile tests on notebooks can be deployed in batches in a production environment,

1.1AddHOSTSparsing1. add a native HOSTS resolution before installing NBU SERVER [Email protected] ~]# cat/etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4:: 1 localhost

Process GroupCollection Process group ID: positive integer for one or more processestwo functionsgetpgid (0) =getpgrp ()Eg: shows the process group ID of the child process and the parent process1 #include 2 #include 3 #include 5 int main () {6

In Linux systems, firewalls are not turned on by default, and there is no policy to configure any firewalls, so there is no/etc/sysconfig/iptables file.First, the general method of solution:1. Use the iptables command in the console to write a

I. Ancillary PACKAGE InstallationPreparatory work: 1. Linux system ready to restore Snapshot (initialize installation) Set IP off selinux configuration yum source 2.yum-y install GCC gcc-c++ 3. Turn off firewall 4. Copy Source Package

Copyright Notice Updated: 2017-05-08Bo Master: LuckyalanContact: [Email protected]Statement: Draft not forget to dig well man, reproduced please indicate the source!1 Article IntroductionThis article describes the Linux command CD.2 Development

Conditional Judgment of Bash programmingBash Programming condition judgment: determine if the prerequisites for subsequent operations are met　　　　　　　　　　1. The common judgment type of condition judgment (bash endogenous):Integer testCharacter testFile

Introduction and Environment preparationThe core of Hadoop is the Distributed File system HDFs and the batch compute MapReduce. In recent years, with the rise of big data, cloud computing, the internet of things, but also greatly attracted my

Guide GDM (Gnome Desktop manager) is a GNOME display environment manager, which is a small program (script) running in the background for running your X session, displaying a login interface and allowing you to log in when you enter your

IntroducedOur production servers often do raid storage, but can you guarantee performance and data security by simply doing raid? The answer is no, we generally recommend the use of battery-protected raid cards, so as to ensure that performance can

Cd/sys/devices/system/cpu/cpu0/cpufreq Cat Scaling_available_governorsHotPlug Conservative OnDemand Userspace PowerSave interactive performanceIn order to be able to several common CPU frequency regulation mode has a basic understanding of the

main function and start routineWhen the kernel executes a C program using an EXEC function, a special startup routine is called before the main function is called, and the executable program designates this routine as the starting address of the

Recommended two remote management Linux tools (Windows-based Systems )1, XshellBaidu Encyclopedia: Xshell is a powerful, secure terminal emulation software that supports SSH1, SSH2, and Microsoft Windows platforms TELNET Protocol. Xshell can be

In Linux, the routing function is enabled. in linux, the routing function is enabled.   There are two methods: 1. Temporarily enable (restart is invalid) Echo 1>/proc/sys/net/ipv4/ip_forward Or Vim/proc/sys/net/ipv4/ip_forward, change 0 to 1,

Disk Partition-gdisk usage, disk partition-gdisk Gdisk usage   Gdisk-InteractiveGUIDpartitiontable (GPT) manipulator GPTfdisk (akagdisk) isatext-modemenu-drivenprogramforcreationandmanipulation Ofpartitiontables. 1. Reasons for using gdisk (1) The