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.
❤️🐧
boot_idseems to be static, probably set at boot.So don’t use it for a random uuid.
it’s fine as long as you reboot before each call
Oops you’re correct. Editing OP.