Or, How I Learned to Stop Worrying and Feed the Kernel Entropy
You must mount the entropy source. The "mount rng script" isn't literally mounting a filesystem. It's a ritual of redirection: feeding the hardware RNG’s output into the kernel’s entropy pool. The classic incantation lives in rng-tools :
And sometimes the script fails. The USB RNG unplugs. The TPM returns zeros. Then you write the unmount script, the error handler, the watchdog. The entropy always decays. The oracle must be fed again. Today, most administrators use systemd services ( rng-tools.service ) or kernel built-ins ( random.trust_cpu=on ). But the raw script persists in embedded systems, air-gapped networks, and the laptops of paranoid cryptographers. It is a totem. A reminder that perfect order is brittle, and that a little beautiful noise is what keeps the digital world alive.
