Use yum for software package management in CentOS

CentOS uses yum for software package management-Linux general technology-Linux technology and application information. The following is a detailed description. This article focuses on two main points: one is how yum is used, and the other is how to find a fast domestic source. In this way, the general usage process of yum is solved.
1. Use of yum:
1) Update the package
1.1) check the updatable package: yum check-update
1.2) update all packages: yum update
1.3) update the specified package: yum update package_name
1.4) Version upgrade: yum upgrade
2) package installation and Deletion
2.1) yum install package_name
2.2) yum remove package_name
3) Search for packages
3.1) search for a specific package: yum search package_name
3.2) Search for a package containing a specific file name: yum provides name
4) package list
4.1) list all installed or updated packages: yum list
4.2) list the specified package: yum list name
4.3) list updatable packages: yum list updates
4.4) list installed packages: yum list installed
4.5) list packages installed but not included in the resource library: yum list extras
2. yum source settings
2.1) Speed up yum download: yum-y install yum-fastestmirror, named yum-plugin-fastestmirror on CentOs 4
2.2) yum source file:/etc/yum. repos. d/CentOS-Base.repo
2.3) CentOS 5 yum source is set to Shanghai Jiao Tong University website
CentOS-Base.repo
[Base]
CentOS-5-Base
# Items list = http://mirrorlist.centos.org /? Release = $ releasever5 & arch = $ basearch &
Repo = OS
# Baseurl = http://developer.centos.org/centos/?releasever/ OS /?basearch/
Baseurl = http://ftp.sjtu.edu.cn/centos/5.0/ OS /?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
# Released updates
[Update]
CentOS-5-Updates
# Items list = http://mirrorlist.centos.org /? Release = 4 & arch = $ basearch & repo = updates
Baseurl = http://ftp.sjtu.edu.cn/centos/5.0/updates/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
# Packages used/produced in the build but not released
[Addons]
CentOS-5-Addons
# Items list = http://mirrorlist.centos.org /? Release = 4 & arch = $ basearch & repo = addons
Baseurl = http://ftp.sjtu.edu.cn/centos/5.0/addons/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
# Additional packages that may be useful
[Extras]
Name = CentOS-5-Extras
# Items list = http://mirrorlist.centos.org /? Release = 4 & arch = $ basearch & repo = extras
Baseurl = http://ftp.sjtu.edu.cn/centos/5.0/extras/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
# Additional packages that extend functionality of existing packages
[Centosplus]
CentOS-5-Plus
# Items list = http://mirrorlist.centos.org /? Release = 4 & arch = $ basearch & repo = centosplus
Baseurl = http://ftp.sjtu.edu.cn/centos/5.0/centosplus/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
# Contrib-packages by Centos Users
[Contrib]
Name = CentOS-5-Contrib
# Items list = http://mirrorlist.centos.org /? Release = 4 & arch = $ basearch & repo = contrib
Baseurl = http://ftp.sjtu.edu.cn/centos/5.0/contrib/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
A. Execute
64-bit:
Rpm -- import http://ftp.sjtu.edu.cn/centos/5.0/ OS /x86_64/RPM-GPG-KEY-CentOS-5
32-bit:
Rpm -- import http://ftp.sjtu.edu.cn/centos/5.0/ OS /i386/RPM-GPG-KEY-CentOS-5
B. Execute yum update.
2.4) set the yum source to a domestic server
# CentOS-Base.repo
#
# This file uses a new release list system developed by Lance Davis for CentOS.
# The mirror system uses the connecting IP address of the client and
# Update status of each mirror to pick mirrors that are updated to and
# Geographically close to the client. You shoshould use this for CentOS updates
# Unless you are manually picking other mirrors.
#
# If the specified list = does not work for you, as a fall back you can try
# Remarked out baseurl = line instead.
#
[Base]
CentOS-5-Base
Base url = http://mirror.be10.com/centos/5/ OS /i386/
Gpgcheck = 1
# Released updates
[Update]
CentOS-5-Updates
Base url = http://mirror.be10.com/centos/5/updates/i386/
Gpgcheck = 1
# Packages used/produced in the build but not released
[Addons]
CentOS-5-Addons
Base url = http://mirror.be10.com/centos/5/addons/i386/
Gpgcheck = 1
# Additional packages that may be useful
[Extras]
Name = CentOS-5-Extras
Base url = http://mirror.be10.com/centos/5/extras/i386/
Gpgcheck = 1
# Additional packages that extend functionality of existing packages
[Centosplus]
CentOS-5-Plus
Base url = http://mirror.be10.com/centos/5/centosplus/i386/
Gpgcheck = 1
Enabled = 0
# Contrib-packages by Centos Users
[Contrib]
Name = CentOS-5-Contrib
Base url = http://mirror.be10.com/centos/5/contrib/i386/
Gpgcheck = 1
Enabled = 0
# Packages in testing
[Testing]
CentOS-5-Testing
Base url = http://mirror.be10.com/centos/5/testing/i386/
Gpgcheck = 1
Enabled = 0
A. Run: rpm -- import http://mirror.be10.com/centos/RPM-GPG-KEY-CentOS-5
3. This article is only about the basic use of yum, and there are still many areas not involved. However, the basic usage is sufficient.