That’s all. I just found this in a random script. Generates a random UUID every time it’s called. I didn’t know.

Of course I can also use uuidgen or pipe /dev/(u)random into something to get a random alphanumeric string - but this is built right into the kernel!

In /proc/sys/kernel/random/, there’s also boot_id which seems to do the same, and some tweakable parameters.

❤️🐧

  • Hamartiogonic@sopuli.xyzEnglish
    1·
    7 hours ago

    That reminds me of the CPU stress test I ran many years ago.

    dd if=/dev/random of=/dev/null

    If you have 8 cores, just open 8 terminals, and run that code in each of them.

    • lime!@feddit.nuEnglish
      2·
      7 hours ago
      for i in {1..n}  # where n == number of cores
do
  dd if=/dev/urandom of=/dev/null &
done

# to stop:
jobs -p | xargs kill