Linux

1. Text editingCommand mode shortcut key command Command Role Dd Delete (cut) the entire line where the cursor is located. 5dd Delete (cut) 5 lines starting at the cursor. Yy

First, Swap introduction:Swap (swap partition) in Linux, similar to the virtual memory of Windows. A portion of the hard disk space is virtual into memory, and the inactive memory in the system is paged to swap to increase the available memory of

17.1 rpm:rpm Package Manager 17.2 Rpmargs: Handling RPM Packages 17.3 Rpmbuild: Building RPM Packages 17.4 Rpmdiff: Compare the differences between two packages 17.5 Rpmelfsym: List symbols by object file in RPM package 17.6

For CentOS, for example, there is no C language and C + + compilation environment, need to install manually, the simplest is to use Yum installation, the process is as follows:1. Installing GCCYum Install GCCAsk if, press Y to enter, orYum-y Install

Tag: Install the virtual machine operating system.I. The beginning of study1. Give yourself a position (your position, where to go in the future, set a goal for yourself)Two. ConventionsUsing CentOS 7.4, VMware Workstation Pro 14, Xshell, Baidu

Common commandsIptables-l-N view firewall rules;Iptables-f to clear all rule chains in the preset table filterIptables-x Clear Preset table rules in user-defined chains in filter/etc/rc.d/init.d/iptables save to write the changes to

Linux Network relatedIfconfig View the IP of the NIC (yum install net-tools)Ifup Ens33/ifdown Ens33 to start and close the NICSet the virtual NIC Ens33:1The place to change is IP and name, and then reboot.If you cannot add a backslash to the colon

Installation and partitioningTwo Ubuntu were installed on the virtual box on OS X and WIN10.Installation and simple shell commands do not say, no big gains.There was a problem in the middle because deft on hand did not allocate enough memory to the

, download resources Download link: http://mirrors.sohu.com/centos/7.4.1708/isos/x86_64/CentOS-7-x86_64-DVD-1708.isoTwo1. Install CentOS 7, select Install later, click Next2. Select the operating system and version3. Select a network type4. Select

Note: Almost all device structures contain the structure of "Strcut kobject kobj" and "Srtuct list_head list".struct Kobject kobj:This structure is used to build the model of Linux device driver model.struct List_head{struct List_head

Centos7Nginx mysql PHP can be installed separately and then in the configuration Nginx mutual phpInstall some of the necessary libraries first------------------------------------------------------------------------------------------------------------

33.1 access control procedures for XHOST:X servers 33.2 XINIT:X Window System initialization 33.3 xlsclients: List running client applications in the display 33.4 xlsfonts: Displays the X Server font list 33.5 Resize: Setting the

Non-active users in Linux exit automatically. Let's imagine this scenario. One of your servers is often accessed by multiple users in different systems on the network. Some users may forget to log out of the session to keep the session in connection.

Weblogic silent domain creation, weblogic silent Create a domain Directory: mkdir-p/home/weblogic/Oracle/Middleware/user_projects/domains/base_domain/ Create a file: create_domain.rsp read template from

The meaning of the file color in Linux, and the meaning of the linux color Color Description Red Compressing a file or package Blue Directory files Light blue Link file

Role of systemd In the morning, the group discussed the role of systemd, which also led to a person's direct withdrawal from the group. In the spirit of seeking knowledge, he searched for some systemd and made some corresponding sorting;I. The birth

In Ubuntu, the command line is used to create (delete) files (folders ).In many cases, we create and delete files/folders on the terminal. Press ctrl + alt + t to open the terminal: Create File: touch a.txt create Folder: mkdir NewFolder delete file:

C Language exercises in Linux: pointers for mystrcmp, mystrlen, and mystrcmpmystrlen C Language exercises in Linux: pointers for mystrcmp and mystrlen # Include # Include Char * mystrcmp (char * str, char * str1) {while (* (str ++)-*

Sharing common linux commands and sharing common linux commands Query logs in a certain period of time in a log Sed-n'/16:17:20/,/16:17:36/P' test. log The date must be printed in log. Use grep '2017-12-17 16:17:20 'test. log to query whether the

Load Balancing cluster LVS-DR and LVS-NATLVS-DR for Server Load balancer Clusters Scheduling Server:One Network Card:Vmnet1: 192.168.80.100------------------------- Load the LVS kernel module ----------------------LVS is now part of the Linux kernel.