Intro
~ rngd is this tool to change the Random number generator, which is related to several other tools/mechanisms for example: SSH keys, random PIDs for processes, TCP sequence numbers, and UUIDs.
This daemon feeds data from a random number generator to the kernel’s random number entropy pool, after first checking the data to ensure that it is properly random.
rngd
Installing:
yum install rng-tools
rngd is a program within rng-tools
Testing
rngd -f