CentOS Learning Notes

Information from network collection, sharing and notes

"How to choose the Linux version you need"

"Server Version"

Http://jingyan.baidu.com/article/11c17a2c143101f446e39d3b.html

"Desktop app Version"

Http://os.51cto.com/art/201307/404309.htm

"2016Linux Ranking"

Http://www.ithome.com/html/it/201621.htm

Http://www.linuxidc.com/Linux/2016-01/127138.htm

001. View current Directory
# pwd

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002. Create a Directory
# mkdir Software

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003. Enter the catalogue
# CD Root/kevin

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004. View all folders below the current path
"Reference": http://www.centoscn.com/CentOS/help/2013/1024/1967.html
Description: The LS display results in different colors to differentiate the file categories. Blue for the table of contents, Gray for ordinary files, green for executable files, red for compressed files, light blue for linked files.
also cd ~ = CD root, which indicates back to the system root directory

# Ls-la
or #ls-la root.
Description: In a Linux system, with "." The beginning is hidden files or hidden directories.

Description: The ls-l command can be abbreviated to LL,

The output information is divided into 7 groups:
File categories and file permissions, number of links or subdirectories, file owner, group to which the file belongs, file size in bytes B, file creation or modification time, file name.

File Category: The first 1 bits represent the file category, "-" on behalf of the ordinary file, "D" for the Directory, "L" for the Symbolic link, "C" for the character device, "B" for the Block device
File permissions: The first set of 9 bits represents the file permissions, the first 3 bits are user, the middle 3 is group, and the last three bits are the permissions of other

-D---Displays the properties of the directory itself rather than the contents of the directory.

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005. View native IP information
# ifconfig-a

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006. Querying the public network IP
# Curl Ifconfig.me

Query the public network IP
# Tracepath Www.sina.com

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007. Set the IP address
"Reference" http://jingyan.baidu.com/article/e4d08ffdd417660fd3f60d70.html

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008. Timed Task crontab command "important"
Http://www.centoscn.com/CentOS/help/2014/1030/4025.html

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009. Download the file wget command detailed
http://www.centoscn.com/CentOS/help/2013/0803/914.html;

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010. Correct shutdown method
http://www.centoscn.com/CentOS/2014/0606/3098.html;

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011. LVM Disk Management Learning "important"
http://www.centoscn.com/CentOS/Intermediate/2015/1106/6395.html;

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012. View port Usage and open port commands
Http://www.centoscn.com/CentOS/help/2013/0725/558.html

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013. Create a new user
Http://www.centoscn.com/CentOS/help/2013/0725/597.html

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014. CentOS7 (Thin operation instructions) "Important"
http://www.centoscn.com/CentOS/help/2016/0429/7147.html;

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015. How CentOS can view specific information such as the hard drive brand model
Http://www.centoscn.com/CentOS/help/2015/0705/5803.html

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016. Linux Common Commands Daquan
Http://www.centoscn.com/CentOS/help/2015/0712/5843.html

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017. CentOS System Management Related commands
http://www.centoscn.com/CentOS/help/2015/1030/6358.html;

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018. CentOS under the Tar decompression GZ decompression bz2 and other kinds of decompression file use method
Http://www.centoscn.com/CentOS/help/2014/0613/3133.html

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019. Description of Zip compression and unzip decompression commands in CentOS
Http://www.centoscn.com/CentOS/help/2013/0826/1448.html

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020. Centos tar compression and decompression commands Daquan
Http://www.centoscn.com/CentOS/help/2013/0725/496.html

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021. Introduction to the use of CentOS 7 FIREWALLD
Http://www.centoscn.com/CentOS/help/2015/0208/4667.html

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022. CentOS only a few ways to view folders
Http://www.centoscn.com/CentOS/help/2015/0705/5799.html

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023. CentOS SSH Installation and configuration
Http://www.centoscn.com/CentOS/config/2013/0926/1713.html

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024.2 Methods of time synchronization for CentOS server
Http://www.centoscn.com/CentOS/config/2013/1017/1878.html

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025. Common methods for installing software under CentOS
Http://www.centoscn.com/CentOS/2012/1226/96.html

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026. CentOS7.0 Download Release Notes new everything version
Http://www.centoscn.com/CentOS/2014/0708/3268.html

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027. CentOS Common Command----grep command
Http://www.centoscn.com/CentOS/help/2016/0816/7789.html

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028. CentOS Basic Command "important"
http://www.centoscn.com/CentOS/help/

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029. CentOS system Configuration "Important"
http://www.centoscn.com/CentOS/config/;

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030. CentOS Intermediate Input "important"

http://www.centoscn.com/CentOS/Intermediate/

CentOS Learning Notes