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.
❤️🐧
Would have to be
cat /proc/sys/kernel/random/uuid > /dev/nullYou can’t pipe to a file, only to programs, and since /dev/null isn’t an executable your command will simply give an error.
To make it more clear, consider using
dd, which lets you explicitly specify an input and output file. For example:dd if=/proc/sys/kernel/random/uuid of=/dev/sda1wait shit that wasn’t the right output oh god oh fudd is just cp but more confusing here.
The only thing dd can do that cp can’t is stop ahead of time, which only really matters for infinite files like
/dev/randomcp /proc/sys/kernel/random/uuid /dev/sdaPeanuts. Real men do
dd if=/proc/sys/kernel/random/uuid of=/dev/sdaThanks, I’m overworked lately.
lol, the last part
i saw this and came to do THE THING but you beat me too it. GOOD ANYA