Yum

The official version of Yum is a professional interactive, rpm-based package manager. The latest version of Yum is powerful and supports installing software, uninstalling software, querying software, updating software and systems, automatically solving rpm package dependency issues, etc. Yum software can automatically calculate dependencies and find out the software packages you want to install, which can help users update every use RPM maintains the "software group" of the machine.

Yum software introduction

The software packages available for Yum download include Fedora's own packages and Fedora from rpmfusion and rpm. Extras are all maintained by the Linux community and are basically free software. All packages have an independent PGP signature, mainly for the security of your system. And for Fedora core 4.0 For users, the signature of rpm. is automatically imported and installed.

Yum commonly used command line commands

​​ ​​Install software (take foo-x.x.x.rpm as an example): yum install foo-x.x.x.rpm

​ ​ Delete software: yum remove foo-x.x.x.rpm or yum erase foo-x.x.x.rpm

Upgrade software: yum upgrade foo or yum update foo

Query information: yum info foo

Search software (taking fields containing foo as an example): yum search foo

Show package dependencies: yum deplist foo

-q execute silently

-t ignore errors

-R[minutes] Set waiting time

-y automatically responds yes

               --skip-broken Ignore dependency issues

​​​​​—nogpgcheck Ignore GPG verification

Check-update checks for updateable packages

                                                                                                clean all

Clean packages Clear temporary package files (files under/var/cache/yum)

      clean headers 清除rpm头文件

Clean oldheaders Clear old rpm header files

       deplist lists the dependencies of the package

List of installable and updateable RPM packages

list installed installed packages

List extras Packages that have been installed and are not in the resource library

Info Installable and updateable RPM package information

info installed Information about installed packages (-qa parameter is similar)

Install[RPM package] installation package

Localinstall installs local RPM packages

Update[RPM package] update package

Upgrade upgrade system

Instructions for use

   yum installation software

yum install epel-release -yyum install nginx -y

   yum software uninstallation

                      Remove software

yum remove nginx -y

Automatically delete software and its dependencies

yum autoremove nginx -y

   yum software update

Update a software

yum update nginx -y

Yum update log

​ ​ 1: Optimized performance

​ ​ 2: We are serious about solving bug problems