Root permissions are required to perform this task. Procedure
To mount the CD-ROM on Linux:
- Log in as a user with root authority.
- REPLACE the CD-ROM in the drive
- enter the following command mount -t iso9660 -o ro /dev/cdrom /cdrom
Mounting the CD-ROM in Linux
Root permissions are required to perform this task. Procedure
Microsoft created its own Linux Distro 
How to delete a directory in Linux command line 
How to remove old NICs in RHEL / CentOS 6 or 5 
CentOS 7 ifconfig command not found 
Installing Railo on CentOS 6.5 
Install PHP 5.5 on Centos 6.5 or RHEL 5.10 via command line