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Expand the root directory of linux6.3 under the virtual machine. the root directory uses linxuLVM. Current size, status: [root @ node1 ~] # Df-hFilesystemSizeUsedAvailUse % Mountedon/dev/mapper/vg_oel63-lv_root13G6.5G5.4G55 %/the following process

I. iptables command format (more complex) iptables [-ttable] command [chain] [rules] [-jtarget] (1) table ------- specify the table name (raw table, mangle table, nat table, filter table) (2) command ------- chain Operation command (-: append rules (

1. Glossary: PV (PhysicalVolume): Physical volume, which is at the bottom of LVM and can be a physical hard disk or partition. VG (VolumeGroup): Volume Group, built on PV, can contain one or more PVS. LV (LogicalVolume): logical volume, built on top

Linuxiptables architecture firewall netfilter/iptable allows installation, maintenance, and inspection. Its own module is filtertableinputforwardoutputNATtableoutputpreroutingpostroutingMangletableoutputprerouting. LinuxIptablesArchitecture firewall

1. the simple replacement expression replacement command can replace another word with one word in the full text: % s/four/4/g "%" range prefix to execute replacement in all rows. The last "g" Mark replaces all matching points in the row. If you

Recently, VPS has suffered a lot from spam comments, and its IP addresses are from Putian, Fujian province, and they are constantly accessing one or two URLs! The following is a section of the script that shields an IP list. The Complete script is

The first type keyword mainly includes host, net, port, such as host210.27.48.2, specifying 210.27.48.2 as a host, net202.0.0.0 specifying 202.0.0.0 as a network address, and port23 specifying port number as 23. If no type is specified, the default

Enabling and disabling the Linux firewall (iptables) is mainly for setting and managing iptables. 1. linux firewall (Iptables) restarts the system to take effect. Enable: chkconfigiptableson is disabled: chkconfigiptablesoff2.Linux firewall

Tcpdump-XvvennSs0-ieth0tcp [20:2] 0x4745ortcp [20:2] 0x48540x4745 for GET first two letters GE0x4854 for HTTP first two letters HT description: usually: a normal TCP connection, there will be three stages: 1. TCP three-way handshake; 2. data

1. configure 163 Source 2, configure epel source 3, configure dag source and test according to my previous article: the following command applies to rhel5 operating systems: rpm-Uhvhttp: // apt. sw.

In this article, the 64-bit version of RHEL6 is configured to use the CentOS yum source of NetEase. most of the content is from the Yum source of RHEL6 basics (23) RHEL using centos (default 32-bit version ), therefore, the logo is Reprinted. At the

Common Command list: command-A, -- append sample iptables-AINPUT... indicates that A new rule is added to A rule refining, and the rule will become the last rule in the rule refining. Command-D, -- delete example iptables-DINPUT --

The latest version of CentOS6.x is CentOS6.5. The following describes the specific installation and configuration process of CentOS6.5. if you need it, refer to the instructions below: the latest version of CentOS6.x is CentOS6.5, the following

View ubuntu hardware information 1, Motherboard information. view the serial number of the motherboard # use the command dmidecode | grep-iserialnumber # View board information cat/proc/pci ------------------------------- View ubuntu hardware

Before using Ubuntu, I believe many people have experienced using Windows. If you have backed up a Windows system, you must remember: first, you need to find a backup tool (usually private software), and then restart your computer to enter the

1. the traditional way to compile the official kernel directly in the console, the need for the following software package bin86-16-bitassemblerandloaderdiff-Filecomparisonutilitieslibc6-dev-GNUCLibrary: DevelopmentLibrariesandHeaderFileslibncurses5-

First, go to this link. Second, this iso file should be placed in the top layer of a partition! Virtual First, go to this link. Second, this iso file should be placed in the top layer of a partition! Open the isofile with virtual light Drive,

Overview: in CentOS6.4, MySQL installed through yum is version 5.1, so I want to install the higher version 5.6.14 through the source code. Body: 1: uninstall the command below the old version of the application to check whether MySQLServerrpm-qa is

The reason is that the debian system is used all the time. after a long time, I want to change it to something new. I used fedora for a while, but I don't feel used to the rpm system. so I switched back to debian. this time I decided to use centos.

There are many tools for creating LiveCD packages, among which UCK and Reconstructor are well known. But these two tools can not make the current operating system into LiveCD, back up the current operating system, and made LiveCD tool also has, such