/usr/bin/NiAudioSample
/usr/bin/NiBackRecorder
/usr/bin/NiConvertXToONI
/usr/bin/NiCRead
/usr/bin/NiRecordSynthetic
/usr/bin/NiSimpleCreate
/usr/bin/NiSimpleRead
/usr/bin/NiSimpleViewer
/usr/bin/NiUserTracker
/usr/bin/NiViewer
You may install this package on CentOS with
yum
install openni-examples