Configuring yum in RHEL5.

1) Make a directory where all our RHEL5 dvd files will be stored.

mkdir -p /var/ftp/pub/repo

2) Insert the RHEL5 DVD and enter the following command
to mount the drive to a mount point.

mount /dev/cdrom /mnt

3) Check the contents of the DVD.

ls -l /mnt

4) Copy all the files of the DVD to the folder created earlier.

cp -ivr /mnt/* /var/ftp/pub/repo/

5) unmount the DVD

umount /mnt

6) Install the createrepo software for creating repository's.
(be careful the s in "server" is in capital letters like "Server" ).

The 'i' in rpm means interactive, 'v' means verbose & 'h' means hash.

rpm -ivh /var/ftp/pub/repo/Server/createrepo-0.4.4.2.fc6.noarchive.rpm

7) Now we will create repository's of two folders Server and VT.

createrepo -v /var/ftp/pub/repo/Server

in case error relating to '.olddata'
enter the following command

rm -rf /var/ftp/pub/repo/Server/.olddata/

rm means remove.
-rf means remove forcefully.

then,

createrepo -v /var/ftp/pub/repo/VT

8) Create the configuration file using vi editor

vi /etc/yum.repos.d/server.repo

insert the following parameters in it:-

[Server]
name=Serverrepo
baseurl=file:///var/ftp/pub/repo/Server
enabled=1
gpgcheck=0
gpgenabled=0

[VT]
name=VTrepo
baseurl=file:///var/ftp/pub/repo/VT
enabled=1
gpgcheck=0
gpgenabled=0

9) with the following command yum will list all the softwares installed
and not-installed on the machine.

yum list all

10) To check whether a software is installed or not use the following example.

yum list vsftp*

11) To install it use

yum install vsftp*

press y for confirmation.

12) To remove it use

yum remove vsftp*

press y for confirmation.