Re-install Yum under Linux7

All operations are under the root user and the system version is Linux7.0 x86_64:

First, delete the original Yum

# rpm-aq|grep Yum|xargs rpm-e--nodeps

Second, download Yum, pay attention to your Linux system version, what version is in the relevant version of the directory to download. But the small version of the directory is not in. If the version is 6.5, just enter the 6 directory, the version is 7.2, just into the 7 directory.

Open the browser, login http://mirrors.163.com/centos/7/os/x86_64/Packages/, find four files, as follows: (* symbol for the minor version, different versions)

1, yum-*.rpm

2, yum-metadata-parser-*.rpm

3, yum-plugin-fastestmirror-*.rpm

4, python-iniparse-*.rpm

Download using wget:
# wget http://mirrors.163.com/centos/7/os/i386/Packages/yum-3.2.29-60.el6.centos.noarch.rpm
# wget http://mirrors.163.com/centos/7/os/i386/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
# wget http://mirrors.163.com/centos/7/os/i386/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
# wget http://mirrors.163.com/centos/7/os/i386/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm

Third, after downloading, install Yum

Because of the interdependence of files, it is necessary to install the python-iniparse-*.rpm file, and then install the other three files, so that the error will not be

# RPM-IVH python-iniparse-0.3.1-2.1.el6.noarch.rpm

# RPM-IVH yum-*.rpm yum-metadata-parser-*.rpm yum-plugin-fastestmirror-*.rpm

Note: Rpm-ivh to install RPM--nodeps--force (plus--nodeps--force for compelling installation, regardless of dependency file)

After the installation, you can use the RM command to delete the RPM files in the current directory (it is useless to load).

Iv. Modification of source documents

1. Enter the directory under the system Yum Source:

#cd/ETC/YUM.REPOS.D

2. Download Yum Source:

#wget Http://mirrors.163.com/.help/CentOS7-Base-163.repo

3. Modify the repo Source: replace the $releasever in the file with 7 (7 refers to the Linux version)

#vi Centos6-base-163.repo

Note: After opening the file, press I to enter modify mode, press ESC when finished, and then press: Wq Save exit (: q! Yes No save exit)

4, renamed as Default repo

#mv Centos7-base-163.repo Centos7-base.repo (This step can be done without doing)

V. Run Makecache Generate cache

#yum Makecache

Run Yum clean all (equivalent to Yum cleanheaders; Yum cleanpackages);

#yum Clean All

Vii. Updating yum files

#yum Update

Article Source: http://blog.csdn.net/delphi1234/article/details/51546798

Re-install Yum under Linux7