how to remove/delete the random data from disk which was created using if=dev/urandom

Question

I think I did some stupid thing by creating random data using some command dd if=/dev/urandom of=20GB.bin bs=1GB count=16 iflag=fullblock in huge size. Actually I was testing the behaviors of something when disk is full.

However Now I wish to delete this. I deleted the dev/urandom folder hoping it will do something, but it seems nothing was deleted without making any difference.

I see some commands online like wipe and shred , However now my dev/urandom folder is deleted, so what exactly should I do now?

Any kind of help will be great.

Answer 1

you saved the random numbers to 20GB.bin thus you can do rm 20GB.bin to remove it. /dev/urandom is a special file bound to a tool and does not save random files, but just creates them on the fly. Some other tools might depend on /dev/urandom so deleting this device file might let them crash.