CentOS rpm and Yum

The software installation of CentOS can be broadly divided into two types:

[centos]rpm file installation, use RPM directive similar to [Ubuntu]deb file installation, use dpkg directive [Centos]yum Install similar [ubuntu]apt-get install

RPM command

(a) query system installed software information

For a RPM package, there are "-" and "." Consists of the following parts: * Package Name * Version Information * Release version number * Run platform when Noarch appears, represents software can be platform compatible

1) Check the software that is already installed in the system

Rpm-qa

2) query which package a file is already installed in;

RPM-QF absolute path to file name

3) query where the installed packages are installed;

Software name definition is: RPM Package removal platform information and suffix information

RPM-QL Software Name

4) query information for an installed package

Rpm-qi Software Name

5) Check the configuration file of the installed software;

RPM-QC Software Name

6) View a document where the software has been installed:

RPM-QD Software Name

7) Check the packages and files on which the software is installed;

RPM-QR Software Name

(b) For non-installed package information query

1) To view the use of a software package, version and other information;

Rpm-qpi rpm File

2) View the files contained in a package;

RPM-QPL rpm File

3) View the location of the package's documentation;

RPM-QPD rpm File

4) View the configuration file of a package;

RPM-QPC rpm File

5) View dependencies for a package

RPM-QPR rpm File

(iii) installation, upgrading, deletion of software packages, etc.

1) Install or upgrade a RPM package

RPM-IVH rpm File "Install" RPM-UVH rpm file "Update"

2) Delete a RPM package

RPM-E Software Name

How to force removal of software, regardless of dependencies, and add--nodeps after the above command

(iv) Signature Import

RPM--import Signature file rpm--import Rpm-gpg-key

Yum command

(i) the basic concept of Yum

1) What is Yum?

Yum = Yellow Dog Updater, Modified main function is more convenient to add/remove/update RPM packages.  It can automatically solve the dependency problem of the package. It makes it easy to manage a large number of system update issues

2) Features of Yum

Multiple repository (Repository) Concise profiles can be configured at the same time (/etc/yum.conf automatically resolves dependency issues encountered when adding or removing RPM packages easy to maintain consistency with RPM database

3) Yum Installation

CentOS comes with (yum-*.noarch.rpm) #rpm-IVH yum-*.noarch.rpm first need to import the system's Rpm-gpg-key before enabling Yum for the first time:

(ii) Use of Yum directives

When using the Yum management software for the first time, Yum will automatically download the required headers placed in the/var/cache/yum directory;

1) Update of RPM package

#检查可以更新的软件包 yum check-update #更新所有的软件包 yum update #更新特定的软件包 yum update kernel #大规模的升级 yum upgrade

2) Installation and removal of RPM packages

#rpm包的安装和删除 yum install xxx "service name" yum remove xxx "service name"

3) information about the Yum cache

#清楚缓存中rpm包文件 Yum Clean Packages #清楚缓存中rpm的头文件 Yum-headers #清除缓存中旧的头文件 yum clean-old headers #清除缓存中旧的rpm头文件和包文件 Yum Clean all

4) Package Information query

#列出资源库中所有可以安装或更新的rpm包 Yum list #列出资源库中特定的可以安装或更新以及已经安装的rpm包 yum list firfox* N: You can use wildcards in RPM package names to query for similar RPM packages # Lists all the RPM packages that can be updated in the Repository Yum list updates #列出已经安装的所有的rpm包 yum list installed #列出已经安装的但是不包含在资源库中的rpm包 yum list Extras N: installed through downloads such as Web sites RPM Package #rpm包信息显示 (info parameter with list), lists all the RPM packages that can be installed or updated in the repository yum info #列出资源库中特定的可以安装或更新以及已经安装的rpm包的信息 yum info firefox* N: You can use the match character in the RPM package name #列出资源库中所有可以更新的rpm包的信息yum info updates #列出已经安装的所有的rpm包的信息 Yum info installed #列出已经安装的但是不包含在资源库中的rpm包的信息 Yum Info Extras N: Information on RPM packages installed via downloads like website # Search for RPM packages matching specific characters Yum search firofox# searches for RPM packages with specific files Yum provides Firefox

(iii) Yum software source update

Http://mirrors.163.com/.help/centos.html

CentOS rpm and Yum