Package: xorg-x11-xkb-extras

"xorg-x11-xkb-extras" package binaries on CentOS:

/usr/bin/xkbbell /usr/bin/xkbevd /usr/bin/xkbprint /usr/bin/xkbvleds /usr/bin/xkbwatch

You may install this package on CentOS with yum install xorg-x11-xkb-extras