CENT OS Commands

Undo/Redo Install:
If everything was installed via the yum package manager, you can undo previous commands:

# Get all yum commands previously run
yum history list all

# Get the details of the command
yum history info [entry number]

# Undo each command top-down
yum history undo [entry number]

Just be careful not to undo the initial system install!
______________________________________________________________________________
# usermod -l jerry tom
# usermod -d /home/jerry -m jerry
______________________________________________________________________________
Install Htop:

-------------- For RHEL/CentOS 7 --------------
# wget dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpm
# rpm -ihv epel-release-7-11.noarch.rpm 
-------------- For RHEL/CentOS 6 --------------
# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# rpm -ihv epel-release-6-8.noarch.rpm

______________________________________________________________________________
Install Teamviewer: 

# yum install glibc alsa-lib freetype libICE libSM libX11 libXau libXdamage 
libXext libXfixes libXi libXrandr libXrender libXtst libgcc libuuid libxcb zlib

# wget http://download.teamviewer.com/download/teamviewer.i686.rpm
# yum install teamviewer.i686.rpm