libXtst.so.6: cannot open shared object

libXtst.so.6: cannot open shared object
wget http://mirror.centos.org/centos/6/os/x86_64/Packages/libXtst-1.2.3-1.el6.x86_64.rpm
wget http://mirror.centos.org/centos/6/os/x86_64/Packages/libXtst-devel-1.2.3-1.el6.x86_64.rpm
yum localinstall *.rpm