linux administration handbook

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Tags: 1.5 project editing compilation installation install Cal English Learning nbsp Quick ReadingEveryone knows it is important to learn the Linux system, to find the Man Handbook Help, but the default Linux man manual is an English document, it is important to quickly read the English men, but the configuration of Chinese men can also allow themselves to learn

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

The use of Man Handbook in Linux--taking CentOS6.8 as an exampleThis article is intended to show you how to quickly start a new command in Linux, after all, in a Linux system, you can do everything by command.Related commands: Help mans Whatis Info#whatisA friend with a certain understanding of English, should be very

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-

listen for new logins. More complicated, there are multiple communication protocols for network logins. The 2 most important protocols are Telnet and rlogin. In addition to logging in, there are many other virtual connections that may be established (for FTP, Gopher, HTTP, and other network services). It is not very efficient to provide a process for each type of connection to listen for, so only one listener is used to identify the type of connection, and the correct program can be started to

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－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

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

programs are installed here. All files in/usr are typically from Linux distribution, locally installed programs and other things under/usr/local. This may not require you to reinstall all programs when upgrading a new system or distribution. Some subdirectories of/usr are listed below (some of the less important directories are omitted, see fsstnd for more information). /usr/x11r6All files of the X window System. To simplify X's development and insta

system administration tasks that the system does not normally run on. Single-user mode is discussed in detail in the chapter. Emergency boot (soft) disk It is not always possible to boot from a hard disk. For example, if Lilo is set incorrectly, the system may not boot. At this point, you need another way to always boot. For a typical PC, it may be a floppy drive. Many Linux distributions allow an emergenc

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

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

, 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

with each other and synchronize behavior-especially with regard to the use of shared variables. In addition, the IPC and synchronization mechanisms enable threads to communicate with each other.? The main advantage of threading is that it is easier to share data between threads, and for some algorithms it is more natural to implement multi-threading than to implement multiple processes. Furthermore, it is obvious that multithreaded applications can benefit from parallel processing of multiproce

Linux provides a rich help manual that you do not have to look for when you need to see the parameters of a command, as long as you have a man. The Linux Man Handbook has several chapters:1, standard commands (command)2. System calls (Systems Call)3. Libraryfunctions (library function)4, specialdevices (equipment description)5. File formats (document format)6. Ga

Linux provides a rich help manual that you do not have to look for when you need to see the parameters of a command, as long as you have a man.The Linux Man Handbook has several chapters:1, standard commands (command)2. System calls (Systems call)3. Library functions (Libraries function)4, special devices (equipment description)5. File formats (document format)6.

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

store the address of the next instruction. When executing an instruction, it is necessary to take the instruction from memory to the instruction register according to the address of the instruction stored in the PC, which is called "Fetch instruction". At the same time, the address in the PC is either automatically added 1 or the next point is given by the transfer pointer. After that, the instructions are analyzed and executed. Complete the execution of the first instruction, then take out the