Linux

Root cause:Reverse route checking is enabled by default on LinuxIf 2 network cards are inside a LAN, then the server may find the gateway from eth0 or eth1, if a packet from eth0 into the gateway on eth1, then from the eth1 is out of the way, it

Modify the boot order# Vim/etc/inittab。。。。。。。D:3:initdefault: #找到这一行, D:3:initdefault: Minimized startup d:5:initdefault: Graphical interface Startup#去掉开机等待的5sVi/boot/grub/menu.lstTimeout=5 #设置开机选项描述, default is 5 secondsTo set a message after a

1. How to view disk partitioning and usageFdisk: View hard disk partition tableDF: Viewing partition usageDu: View file space usage2. root directory File function introduction / root directory /bin The most

File properties Overview (LS-LHI)Everything in Linux is fileThe properties of a file or directory in a Linux system mainly include: index node (inode), file type, permission attribute, number of links, user and user group belonging to, last modified

1.1garbled solution appearsChange languageExport. Gb2312echo $LANGen _us. GB2312The character set currently used by the system1 , Echo $LANG2 , see the language of your current remote connection tool (software's character set)#1. The character set

I. Overview of inter-process communicationprocess Communication has for example some of the following purposes:A, transfer data: A process needs to send its data to another process. The amount of data sent is between one byte and a few m bytesB,

1 Nginx IntroductionCompared with Apache, in performance, Nginx occupies less system resources, the specific scene application (static data) can support more concurrent connections, achieve higher access efficiency; in function, Nginx is an

Find command: Used to look up files in the file tree and make the appropriate processing1, the format of the Find command;Find Pathname-options [-print-exec-ok ...] {}\2, the parameters of the Find command;The directory path that the Pathname:find

sed function Description: SED is a powerful text file processing tool for Linux, which can be used to add, delete, find, query, and match regular expressions to meet the needs of the work. It is also a core skill that an OPS person must master.-

1. mkdirmkdir [Options] Directory creation directoryParameters:-p recursively Create a directory-m set permissions on the created directory,-M, default is 7552. RmDirrmdir [Options] Directory Delete "empty" directory-P Recursive Deletemkdir usage

Install Pyenv on CentOS:Before installing pyenv, you need to install the following dependency packages:Under the Centos/rhel/fedora:Yum Install readline readline-devel readline-staticyum install OpenSSL openssl-devel openssl-staticyum install Sqlite-

1. Download the relevant componentsYum install-y gcc gcc-c++ Installing the C + + compilerwget http://sourceforge.net/projects/pcre/files/pcre/8.37/pcre-8.37.tar.gzwget ftp://ftp.openssl.org/source/old/1.0.1/openssl-1.0.1j.tar.gzwget

Introduction to Linux and Ubuntu InstallationLinux, free open source, multi-user multitasking system. Linux is based on multiple versions of the derivative. RedHat, Ubuntu, DebianInstall a VMware or VirtualBox virtual machine. Specific installation

2017/02/09Cat commandtab command completion and file fill function to avoid incorrect command and file nameCTRL + C kills a running process interrupt processCTRL + D is equivalent to exitSee how to use the info dateDate Man---View the detailed use

Method One: Manually install the JDK installation package, configure the environment variables1. Create a Java directory under the/usr/directory[Email protected] ~]# mkdir/usr/~]# Cd/usr/java2. Download and unzip the installation package[[email

Linux reduced file system size LVM Lab Environment: (1) Operating system: centos6.7 i686(2) VMware Workstation version 12(3) Experimental hard disk size 5G First look at the current disk usage: 650) this.width=650; "src="

Program self-starting method in embedded systemIn many embedded systems, due to the low availability of resources, it is often possible for the application to start automatically after the system starts to reduce user action and conserve resources.  

Guo XiaoxingWeibo: Guo Xiaoxing's Sina WeiboEmail:[email protected]Blog: http://blog.csdn.net/allenwellsGithub:https://github.com/allenwellsOne system power up and boot ROMNOR Flash as the boot ROM system boot process Nor flash at the

New linux users-File Permission and modification, new linux permission Modification If you access or execute a file to display Permission deny, this is generally a Permission issue. Use"ls -l"You can view the detailed information of files in this

Centos disk partition resizing The procedure is as follows: Step 1. view the current partition of the Local Machine[Root @ linuxidc ~] # Df-hFile System capacity in use available % mount point/Dev/mapper/VolGroup-lv_root7.7G 7.1G 155 M 98%/Tmpfs