/usr/bin/xscreensaver
/usr/bin/xscreensaver-command
/usr/bin/xscreensaver-demo
/usr/bin/xscreensaver-getimage
/usr/bin/xscreensaver-getimage-file
/usr/bin/xscreensaver-getimage-video
/usr/bin/xscreensaver-text
/usr/sbin/update-xscreensaver-hacks
You may install this package on CentOS with
yum
install xscreensaver-base