today-i-learnt

Create huge file

Category	shell
Added on	2020-08-11
Source	source

It may be useful to create some very big file for testing purposes.

You can generate a file filled with random content with:

dd if=/dev/urandom of=urandom.dat bs=1G seek=10 status=progress

Want to create something way bigger?

:warning: this snippet will create 100 1GB files, make sure you have enough free disk space :info: may take some time, is suggested to run it with screen

for j in $(seq 1 10); do
  for i in $(seq 1 10); do
    echo "Creating $j-$i..."
    sudo dd if=/dev/urandom of=urandom-"$j-$i".dat bs=1G seek=10 status=progress
  done
done
ls -l urandom-*