Here is a detailed guide for how to install VMware Tools on CentOS6 by command line interface.
1. Open vSphere and select “Install/Upgrade VMware Tools” under “guest” menu
2. Connect a ISO image of VMware-tools from the Datastores
3. Select folder, “vmimages”.
4. Select folder, “tools-isoimages”.
5. Select ISO image, “linux.ios“.
6. Mount ISO image.
# mount /dev/cdrom /mnt
mount: block device /dev/sr0 is write-protected, mounting read-only
7. Change directory.
# cd /mnt
# ls
8. Change directory and extract tar.gz file.
# cd /tmp
# tar xzf /mnt/VMwareTools-9.4.0-1280544.tar.gz
# cd vmware-tools-distrib
# ls
9. Completed
I hope it is informative for you.