Install and manage software

RedHat Site YUM

Checking for updating packages

RedHat site

• yum check-update //check installed packages have updates
• yum update //update all packages
• yum update packageName //update target package

Packages and packages groups

RedHat Site

• yum search vim gvim emacs //search packages
• yum list abrt-addon* abrt-plugin* //list installed and available packages
• yum list all
• yum list installed
• yum list installed "krb?-*"
• yum list available
• yum grouplist //list all package groups
• yum repolist //list enabled repository

Package infomation

• yum info php72
• yumdb info php72 //query Yum database for alternative infomation

Install package

• yum install httpd php72 mysqld ...
• yum install perl-Crypt-* //install multiple similarly-named packages
• yum groupinstall [groupName/groupID] //install a package group

Remove package

• yum remove totem rhythmbox...

WORKING WITH TRANSACTION HISTORY

RedHan Site

• yum history list startID..endID // yum list 1..5
• yum history list all
• yum history summary

Configuring Yum and Yum repositories

RedHat Site

Using yum-config-manager command

• yum-config-manager //view current configuration
• yum-config-manager --add-repo repository_url
• yum-config-manager --enable remi-php72 //enable installed repo
• yum-config-manager --disable repository... //disable installed repo
• yum clean all //clean cache

About Repository

Two common repositories，epel and remi

install epel repository

rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

epel site

Install remi repository

yum install -y  http://rpms.remirepo.net/enterprise/remi-release-7.rpm

//enable repo
 yum-config-manager --enable remi-php71   //enable php71
 yum-config-manager --enable remi-php72   //enable php72

yum command

yum repolist [all / enabled /disabled]

Location of yum repository

/etc/yum.repos.d