Linux

First, the environmentServer IP Address:192.168.1.2Linux Operating system IP Address:192.168.1.3(eth0);192.168.10.20(eth1)Client IP Address:192.168.10.30The topology diagram is as follows:650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/89/

? Linux file Management related commands are: CP,MV,RMFile view class commands are: Cat,tac,head,tail,more,lessNext, describe each:CP Command: Implementing File ReplicationIf you are copying a single file: CP [options] Source destination① If the

Cat/proc/meminfo read out the kernel information to explain,The next article will simply analyze the code that reads the

1. Mount the disc[[email protected] ~]# Mount/dev/cdrom/media/cdrom/mount:/dev/sr0 write protection, will be mounted as read-onlyThe CDROM directory under/media is created in advance.2. Modify Yum configuration file (file

The Whereis command can only be used for program name searches, and only binary files (parameter-B), man description file (parameter-m), and source code file (parameter-s) are searched. If the argument is omitted, all information is returned.Whereis

Iptables detailed syntax and configuration:SNAT: Source Address TranslationDNAT: Destination Address TranslationPnat: Port Address Translation----------------------------------Iptables rule ChainRoute later to native: INPUTNative exports:

Facl Introduction to Commands:Save additional access control permissions with file extensions1 . Command format:setfacl [option] [Perm]fileSETFACL: Set Facl access control permissionsGetfacl: View facl access control permissions2 . Command

Gateway??? What the hell? Feel a headache Ah! It's okay, it's even easier!Let me start with science. What is a switch? What is a router?switch is mainly used for local area network, several computers in the same network segment, these machines to

Reference http://www.361way.com/chang-file-time/1632.htmlOne: Check the time1: View file specific time informationFile: ' Probn'Size:2Blocks:8IO Block:4096regular filedevice:803h/2051D Inode:913948Links:1Access: (0755/-rwxr-xr-x) Uid: (0/root) Gid: (

grep (Global search Regular expression (RE) and print out of the line, full search of regular expressions and print out rows) is a powerful text search tool that uses regular expressions to search for text. and print out the matching lines.Options:

fdisk Introduction to Commands:Check that the current system identifies several hard drives or partitions the disk. vfs:virtual File System virtual filesystem1 . Command format:fdisk [options] partitioning the hard diskfdisk [Options]-l list

Linux Yum commandYum (Yellow dog Updater, Modified) is a shell front-end package manager in Fedora and Redhat as well as in SuSE.Based on RPM package management, the ability to automatically download the RPM package from the specified server and

# # # time Synchronization # # #1 . Server Yum install chrony-y          Installation Services Vim/etc/chrony.conf            Master profile 22 : Allow 172.25 . *. *           allow synchronized IP segment 10           do not sync anyone, time

Date: October 30, 2016Usually in the Linux experiment, the Linux system will be shut down the firewall, to avoid being affected when doing experiments. After the system installation is complete, turn off the iptables firewall with SELinux and

Introduction to the LVS clusterLVS works on the fourth layer of TCP/IP and can be distributed by Director_server to different backend rs_server depending on the IP or port requested by the user, because it works on layer fourth, so it only resolves

In Linux, everything is file. Each file has an inode number that matches it, and each inode can match multiple files.and links have soft links, hard links of the points. A soft link is like a shortcut to Windows, and a hard link is like an alias

1. Distinguish the role of RPM-QI-QF-QL-QA four different combinations of options?#rpm-qi Get information about an installed RPM package#rpm-QF list which rpm package a file belongs to#rpm-ql to List a RPM package installed file#rpm-QA queries all

In Linux, everything is file.In a Linux system, each file has an inode number that matches it, and each inode can match multiple files.and links have soft links, hard links of the points. A soft link is like a shortcut to Windows, and a hard link is

Windows under# Turn on URL rewritingRewriteengine on# installation directoryRewritebase/# Protect hidden files from being viewedOrder Deny,allowDeny from all# Protect application and system files from being viewedRewriterule ^ (?:

Socket for linux ProgrammingTCP/IP protocol and socket EncapsulationBasic Process of socket programmingEstablish a socket connection (three handshakes)Socket Connection disconnection (three handshakes) Because the TCP connection is full-duplex, each