Install and update libraries using external devices (optical drives) on linux

Install and update libraries using external devices (optical drives) on linux
1. Mount the optical drive (the directory does not exist, create)
Mount-t auto/dev/cdrom/mnt/cdrom

2. Modify the index file to read the local file.
Vi/etc/yum. repos. d/CentOS-Media.repo
Add file: // mnt/cdrom/to the node baseurl/

3. Install openssl with yum)
Yum -- disablerepo = * -- enablerepo = c6-media install openssl-devel-1.0.0-20.el6_2.5.i686.rpm

You can also enter the directory/mnt/cdrom/Packages for forced Installation
Rpm-ivh glibc-devel-2.12-1.80.el6.i686.rpm -- force -- nodeps

4. Uninstall the optical drive

Umount/mnt/cdrom