Linux

Under the Linux system, the first network card is called Eth0, the second network card is called eth1, here we give the first network card to set up multiple IP, also that is to add multiple subnets, such as eth0:0, eth1:1 This network interface,

Binary Package Management Update source Server list sudo vi/etc/source.list Debian series: APT Package management Update Source sudo apt-get update source sudo apt-get install package installation package sudo apt-get remove package Delete

to set the password complexity under Linux: (1) Modify/etc/login.defs file pass_max_days #密码最长过期天数Pass_min_days #密码最小过期天数Pass_min_len #密码最小长度Pass_warn_age 7 #密码过期警告天数   (2) Modify/etc/pam.d/system-auth file find password requisite pam_cracklib.so

 Linux kernel wait queue inquiry-wait_queue_t-wait_queue_head_t 【 Related source version: Linux kernel source version: linux-3.0.86 Uboot version: uboot-2010.12. Android System Source version: Android-5.0.2 " Waiting queues are one way in which

common methods for copy files between Linux and Windows reference URL: https://www.cnblogs.com/black-mamba/p/5918646.html The first is FTP, which is one of the Linux installation FTP Server, another use of FTP client program for file copy.

The cat command function is used to display the contents of the entire file, used alone, without paging function, so often and more commands with the use, Cat command and is to tell the file merged into a file function. More command function: let

Turn from: http://nathanxu.blog.51cto.com/50836/56663 The questions are as follows:In the description of the Gettimeofday function in the man page of Debian Linux, there is a description:DESCRIPTIONThe functions Gettimeofdayand Settimeofday can get

Install **************************Outline:1. Create a non-root user2. Download Apache 2.0.54 and compile the installation3. Download svn 1.2.1 and compile the installation4. Add some directories and files5. Modify Apache configuration file http.conf6

The traditional way to get the insert or pull of u disk is to run the HotPlug program at the kernel level, the related parameters are passed through the environment variable, and then the HotPlug notice other application that concerns hotplug. This

Linux Performance Tuning Command essenceTime: 2010-6-23First, see the hard drive read speedCommand: Hdparm-t/dev/sda5Printed: Timing buffered disk reads:254 MB in 3.01 seconds = 84.34 mb/secDescription: Can specify which hard disk to query the OH.Ii.

The DD command is a very simple backup tool for Linux distributions. The "DD" tool simply copies the standard input to the standard output and reads in 512-byte blocks.The DD command is a very simple backup tool for Linux distributions. The "DD"

1. Download Tomcat 2. Extract Tomcat Rename to Dubbo-admin-tomcat TAR-ZXVF apache-tomcat-7.0.57.tar.gz MV apache-tomcat-7.0.57 dubbo-admin-tomcat 3. Remove all files from the Tomcat WebApps directory CD Dubbo-admin-tomcat/webapp 4. Upload the

Linux Memory Source analysis-initialization of page tables This article is original, reprint please specify: http://www.cnblogs.com/tolimit/p/4585803.html In this article, we assume that the 32-bit system under x86 is not to analyze the page table

mainly include: File, Cat, head, tail, more, less, umask, WC Llinux contains many commands that help us read files in different ways. For example, we can verify the different types of files, you can read from the top or the bottom of the file, and

RPM-IVH install_rpm Tar xvf Informix-linux.tar Inux to extract the command Daquan . tarUnpack: Tar xvf Filename.tarPacking: Tar cvf filename.tar dirname(Note: Tar is packed, not compressed.) ）———————————————. gzDecompression 1:gunzip

After we get a Linux kernel source, we must first familiarize ourselves with the structure of its directory. Its directory structure The figure looks like this: Arch: This directory is architecture-related, there are many CPU architectures, such as

Grammarmkdir (option) (parameter)Options-Z: Sets the security context, which is valid when SELinux is used;-m or--mode set directory permissions while setting directory;-P or--parents If the top-level directory to be set up is not currently

OpenSSL is an open source SSL technology, because I need to use PHP-related features, need to get HTTPS files so I have to install this thing, below I have collated two kinds of OpenSSL installation configuration method.Installation

Compression tool: GZIP,BZIP2 compression capability is gradually enhancedPackage or compress tool: tarPackage and Compress tool: Zip compression capability is stronger than gzip and bzip2The difference between the two types of compression tools is

Linux swap behavior: Carriage return and line wrapping one represents (\ n) Windows swap behavior: Carriage return line breaks into two representations (\ r \ n) 1th method: Need to install dos2unixwindows Linux:dos2unixlinux turn