Shulou(Shulou.com)06/01 Report--

Yum (full name Yellow dog Updater, Modified) is a Shell front-end software package in Fedora and RedHat as well as CentOS

The rig. Based on RPM package management, RPM packages can be downloaded and installed automatically from designated servers, dependencies can be automatically dealt with, and all dependent software packages can be installed at one time without tedious downloading and installation.

One: commands commonly used in yum

Yum command line options

-- nogpgcheck; prohibits gpgcheck

-y; automatic answer is "yes"

-Q; silent mode

-- disablerepo=repoidglob; temporarily disables the repo specified here

-- enablerepo=repoidglob; temporarily enables the repo specified here

-- noplugins; disables all plug-ins

Yum [options] [command] [package...]

Yum warehouse

Yumrepository for short yumrepo, stores a large number of rpm packages, as well as related metadata files

Configuration file for yum:

/ etc/yum.conf provides common configuration for the warehouse

/ etc/yum.repos.d/*.repo provides coordination for warehouse direction

Definition of yum warehouse

[repositoryID] the only one in the warehouse ID

The name of name=Some name for this repositor warehouse is optional.

The access path to the baseurl=url://path/to/repository warehouse

Enabled= {0 | 1} whether to enable this warehouse

Gegcheck= {0 | 1} whether to check the validity of the source

Gpgkey=URL specifies the secret key of URL,gpg

Whether enabledgroup= {0 | 1} supports the use of group batch management packages on the warehouse

Failovermethod= {roundrobin | prioity} failover method defaults to rr, which means random selection

Cost=

The default is 1000

The 1.yum command uses yum [options] [command] [package.]

two。 Displays a list of warehouses; repolist [all | enabled | disabled]

3. Show package: list

# yum list [all | glob_exp1] [glob_exp2] [...]

Packages that display all or match criteria

# yum list {available | installed | updates} [glob_exp1]

Show packages in the warehouse that have not yet been installed / installed / upgradeable

For example:

1. Use the yum list | less command to display all packages in the yum repository. @ indicates the packages that have been installed, and @ anaconda indicates the packages installed when the system is installed.

Show all packages that begin with httpd

4. Installpackage1 [package2] [....]

Install the package

Reinstall package1 [package2] [...]

Reinstall the package

For example: install gcc, already completed

5.update [package1] [package2] [...]

Upgrade package

Remove | erase package1 [package2] [...]

Uninstall the package

6.info [...]

View the package

For example, view the gcc package

7. Provides | whatprovides feature1 [feature2] [...]

Check that the specified feature (which can be a file) is provided by that package

8.clean [packages | metadata | expire-cache | rpmdb | plugins | all]

Clear the local cache

9 .search string1 [string2] [...]

Search for package name and summary information with specified keywords

For example, search for bash-related

10. Commands related to package group management

Groupinstall group1 [group2] [...]

Groupupdate group [group2] [...]

Grouplist [hidden] [groupwildcard] [...]

Groupremove group1 [group2] [...]

Groupinfo group1 [....]

Second: create a yum warehouse

1. (1) Mount the CD to a directory, as shown in / media/cdrom

# mount-r-t iso9660 / dev/cdrom / media/cdrom

(2) create a configuration file

[ID]

Name=

Baseurl= file:///

Enabled=

Gpgcheck=

Variables available in 2.yum 's repo configuration file

The major version number of the current os release of $releasever;

$arch; platform

$basearch; basic platform

$YUM0-$YUM9

3. Create a yum repository

Createrepo [options]

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