lspci module is not installed on linux os by default
you need to use below steps to install it
[root@localhost ~]# yum install pciutils
 Loaded plugins: fastestmirror
 Setting up Install Process
 Loading mirror speeds from cached hostfile
 * base: yum.tamu.edu
 * extras: mirrors.cmich.edu
 * openvz-kernel-rhel6: openvz.jetfire.io
 * openvz-utils: openvz.jetfire.io
 * updates: centos.mia.host-engine.com
 Resolving Dependencies
 –> Running transaction check
 —> Package pciutils.x86_64 0:3.1.10-4.el6 will be installed
 –> Finished Dependency Resolution
Dependencies Resolved
========================================================================================================================================================================
 Package Arch Version Repository Size
 ========================================================================================================================================================================
 Installing:
 pciutils x86_64 3.1.10-4.el6 base 85 k
Transaction Summary
 ========================================================================================================================================================================
 Install 1 Package(s)
Total download size: 85 k
 Installed size: 180 k
 Is this ok [y/N]: y
 Downloading Packages:
 pciutils-3.1.10-4.el6.x86_64.rpm | 85 kB 00:00
 Running rpm_check_debug
 Running Transaction Test
 Transaction Test Succeeded
 Running Transaction
 Installing : pciutils-3.1.10-4.el6.x86_64 1/1
 Verifying : pciutils-3.1.10-4.el6.x86_64 1/1
Installed:
 pciutils.x86_64 0:3.1.10-4.el6
Complete!
The module is necessary to check of ethernet or graphics card installed in cli mode
 



