linux administration book

Common Linux System administration commandsWhoAmI shows the user of the current operation, such as:650) this.width=650; "src=" Http://p3.pstatp.com/large/19210001778d80f7b8c8 "alt=" Linux Learning ~linux System Administration Command "style=" border:0px;vertical-align:middle

services at the moment, you will see that almost every part of your system can be configured and managed through Webmin, facilitating the management of Linux practitioners!Webmin, the developer is Chinese! Very good, thank you!Official website: http://www.webmin.com/01. Downloadhttp://prdownloads.sourceforge.net/webadmin/webmin-1.810-1.noarch.rpm02. InstallationRPM-IVH xx.rpmError:[Email protected] ~]# RPM-IVH webmin-1.810-1.noarch.rpmWarning:webmin-

includes a file system of size 0 blocks -B,--block-size= size block with specified -H,--human-readable file system size in an easy-to-understand format (e.g. 1K 234M 2G) -H,--si similar to-H, but takes 1000 of the time instead of 1024 -I,--inodes displays inode information instead of block usage -K is--block-size=1k -L,--local only displays the native file system --no-sync No sync action (default) before getting usage data -P,--portability using POSIX output format --sync syn

simply enters the command man and the name of the command shell will list a complete description.Standard usage:Name of the man commandTo query the description page of the LS command, enter the command: Man lsTo flip through the manual page, you can use the page UP and PAGE DOWN keys, or use the spacebar to turn back one page and use B to flip forward. To exit the manual page, enter the command Q. To search for keywords in the manuals page, enter a command/and keyword or phrase to search for, a

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－1. UnameThe uname command is used to print information about the current system (kernel version number, hardware architecture, host name, operating system type, etc.)-A or-all: Displays all information;-M or--N or-R or--release: Displays the operating system's release number;-Sor- -- -P or--processor: output processor type or "unknown"-i or--hardware-platform: output hardware platform or " Unknown"-O or--operating----version: Displays version

80/tcpBased on C/S modelLoading httpd/var/www/html/ETC/HTTPD/CONF/HTTPD.CONF Master configuration fileSELinuxAn access model developed by the U.S. Security ServiceEnableDisabledEnforing: Mandatory mode if our actions violate selinux, force a refusalPermissive: If you violate SELinux, you will only be warned that you can still accessFiles can be set up with permissions called DAC active access controlSELinux mac for files or directories, mandatory access controlTwo important elements related to S

(1) Process management1. Determine the server health status2. View the processA. Viewing all processes in the system: PSExample: PS aux (using BSD OS command format)A show all foreground processesX Show all background processesU shows which user generatedPs-le (using the Linux Standard command format)-L display more detailed information-E Show All processesResult descriptionVSZ: Occupies virtual memory size kbRSS: Occupies actual physical memory size

, and they are isolated from each other before they are merged into the application.Note:[1] If you do not want to enter the Android SDK directory every time to run the Android command, you can add the SDK platform-tools/and tools/two directories to the environment variable PATH.[2] Try not to change the project path as much as possible, as this will break the SDK path properties in Local.properties. If you changed the project path, use the Android Update Project command to update the project's

example: useradd-d/home/bird bird2 ---bird2 is the account name,/home/Bird is the main directory of Bird2 -the general user of the system's main directory is generally built in/home/this pathpasswd Set User password -- in Linux, Superuser can use the passwd command to set or modify the user's password for a normal user. Users can also use the command directly to modify their own passwords without having to use the user name after the command. --pa

Linux File System administration commandsCommon Commands1. DF command to view the usage of the partitionCommon options-H More Humane-m displays partition usage in megabytesDisplay information:Mounted on: Mount pointFilesystem: The specific hardware name that corresponds to2, du command to view the file/directory size, by default in K unitsCommon options:-H "Humanity"Du-h/home/xiaofang-S "Statistic statistic

, no permission is- The fourth character represents the owner execution permission, if the permission is x, no permission is- Fifth character represents the owner of the same group of user Read permission, if the permission is R, No permission is- The sixth character is the owner of the same group of user write permissions, if the permission is W, no permission is- The seventh character indicates that the owner is the same as the group user execution permissions, if the permission is x, no permi

also useful when creating a RAM disk.Module classLsmodDegree of importance: MediumLists all installed kernel modules.InsmodDegree of importance: MediumForce the installation of a kernel module (instead of using modprobe if possible) must be called as root.RmmodDegree of importance: MediumForces the uninstallation of a kernel module. Must be called as root.ModprobeDegree of importance: MediumThe module loader, in general, is automatically called in the startup script. Must be called as root.Depm

: Modify which NIC to follow which, only one can be omitted) x.x.x.x/y (M.M.M.M)//modify IP information; x:ip address, Y: Mask length, M: mask. such as =225.225.255.0Shutdown-h now or Poweroff or init 0//shutdown operation.Shutdown-r now or reboot or init 6//restart operation.Shutdown-r +15 ' The system would be rebboted!! '//Send a notification to each user who is currently logged on to the Linux host ' the system would be rebboted ', and reboot afte

Becoming a Senior Programmer proficient in Linux programming has always been the goal of many friends. According to statistics from chinacache, the monthly salary of Linux programmers in Beijing is 1.8 times that of Windows programmers, 2.6 times that of Java programmers, and 2.9 times that of Windows programmers. At the same time, the data shows that with the increase of work experience, the income gap bet

about turning around with Microsoft. UNIX advanced programming version 2ndAdvanced Programming in UNIX environment is a must-have book for Unix/Linux programmers. It can be said that if a Linux programmer has not read this Books, just as Christians have not read the Bible, are hard to understand. This book summarizes

Linux Basic tutorial (total two attachments, download complete) First Download Address: Ftp://ftp_hllinux:123456@211.95.73.26/suse/linux123.rar (please download later) Second Download address: Ftp://ftp_hllinux:123456@211.95.73.26/suse/linuxshell.rar (please download later for a while) Linux Tutorial recommended: Linux system Administrator's Guide Sho

Linux depth Introduction First, from the introduction of Linux system installation, the Linux system management and server configuration of the two parts of knowledge. System management aspects include Linux system introduction and installation, Linux character interface, di

1: First familiar with the Linux platformWe will use VI/Vim tools to familiarize ourselves with the compilation of meakefile shell files by Using Linux commands.We recommend that you read the GNU make or makefile in the/Linux documents/basic Linux tools directory.Vi.doc, Linux