Package: freeradius

"freeradius" package binaries on CentOS:

/usr/sbin/checkrad /usr/sbin/raddebug /usr/sbin/radiusd /usr/sbin/radmin /usr/sbin/radwatch

You may install this package on CentOS with yum install freeradius

"freeradius" package binaries on Debian:

/usr/sbin/checkrad /usr/sbin/freeradius /usr/sbin/raddebug /usr/sbin/radmin /usr/sbin/radwatch

You may install this package on Debian with apt-get install freeradius