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 is static, and some tweakable parameters.

❤️🐧

  • A_norny_mousse@feddit.orgOP
    1·
    6 hours ago

    while :; do cat /proc/sys/kernel/random/uuid > /dev/null; done

    edit: on all cores for maximum “efficiency”