RHCSA10

Package Introduction
rpm What does it contain
All documents , Executable file , Help document , The configuration document
Metadata , Basic information about the package , size , Content

rpm
-pqi Search for basic information , Metadata
-qlp Query the package file
-qc Query configuration document
-qd Query the help document
-ivh Install package , Show details

yum install
YUM It solves the problem of software package dependency , Simplify package management

Identify disks and access Linux file system



df -h Check the system disk usage