Parsing linux package Management and system updates

1.rpm is an open package management system that provides a way to quickly install software packages

2.rpm can not solve the package dependency very well, so yum.

Rpm command

3. Software package correlation

Rpm-ivh is commonly used to install rpm packages.

Rpm-Uvh is commonly used to upgrade the package.

Rpm-V verification package

The role of the 4.yum installation package

(1) provides a good way to solve the problem of dependency between software packages.

(2) yum is convenient to manage the update problems of a large number of systems

(3) multiple warehouses can be configured.

(4) concise configuration file

(5) easy to use

5. Configure the yum client update source

(1) there is a CentOS- Base.repo file in the / etc/yum.repos.d directory to set up the remote warehouse CentOS-Media.repo to set the local warehouse

(2) in the .repos file, repositoryid: specify a warehouse, name specify the warehouse name, baseurl: specify the URL of the warehouse, mirrorlist specify the image site of the warehouse, enable whether to enable this warehouse, gpgcheck check the GPG signature of the software package, gpgkey: specify the URL of the GPG signature file

Commands for the yum package

6. Speed up yum download

(1)

Vim / etc/yum.conf

(2)

Proxy= proxy ip: user name of the port proxy_username= proxy server proxy_password= proxy server password

7. Configure yum to let yum automatically select the fastest mirror server

Yum install yum-fastestmirror