In centos, yum uses CD-ROM as the software installation source

In some environments, you cannot access the external network. In this case, it is also an option to use the full version CD as the installation source.

Environment: CentOS release 5.5 (Final)

1. Mount the system disk (DVD version CentOS-5.5-i386-bin-DVD.iso) optical drive:

mkdir /media/cdrom
mount /dev/cdrom /media/cdrom

2. Keep the installation library files:

 

 

/etc/yum.repos.d/CentOS-Media.repo

# CentOS-Media.repo
#
# This repo is used to mount the default locations for a CDROM / DVD on
#  CentOS-5.  You can use this repo and yum to install items directly off the
#  DVD ISO that we release.
#
# To use this repo, put in your DVD and use it with the other repos too:
#  yum --enablerepo=c5-media [command]
#
# or for ONLY the media repo, do this:
#
#  yum --disablerepo=\* --enablerepo=c5-media [command]

[c5-middle]
name=CentOS-$releasever - Media
baseurl = file: /// media/cdrom/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

3. Test the yum installation source:

 

 

[root@localhost cdrom]# yum --enablerepo=c5-media info vsftpd
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Installed Packages
Name       : vsftpd
Arch       : i386
Version    : 2.0.5
Release    : 16.el5_4.1
Size       : 285 k
Repo       : installed
Summary : vsftpd - very secure Ftp daemon
URL        : http://vsftpd.beasts.org/
License    : GPL
Description: vsftpd is a very secure FTP daemon. it is completely from scratch
           : written.

 

4. Common yum commands:

Remove the graphical interface package of CentOS5:
yum --enablerepo=c5-media --disableplugin=fastestmirror groupremove "GNOME Desktop Environment"
yum --enablerepo=c5-media --disableplugin=fastestmirror groupremove "X Window System"

install Chinese environment language Related packages:
yum --enablerepo=c5-media --disableplugin=fastestmirror groupinstall "chinese-support"

specific component package information yum groupinfo xxxx
all available component package information yum grouplist xxxx
software related installation information yum info xxx
Search for a given string software yum search xxx
delete a software yum erase xxx
install a soft armor yum install xxx
see yum --help for details