How to install and uninstall software in centos yum

Installation Method

Yum-y install httpd
when multiple similar software are installed,
Yum-y install httpd *

Yum-y install httpd PHP-Gd mysql
when a software is uninstalled

Yum update php

Yum-y remove httpd
when multiple similar software are uninstalled,
Yum-y remove httpd *
when multiple non-similar software are uninstalled
Yum-y remove httpd PHP-Gd mysql

there is also a great usage
if I want to run the iostat command to view the status of the CPU and storage devices, however, the command
therefore, yum install iostat is executed and the software cannot be found,
Yum search iostat can be used to find the iostat-related installation package,
to install a Program , remember only part of the name, you can also install
Yum search PNG | grep PNG
you can find the name of libpng we want to install.