Hi,
Teemu Likonen wrote:
> For this new subject I will add another use: quickly create empty file
> of specific size, for example 5 * 1024 bytes:
> $ dd of=empty obs=1024 seek=5 count=0
Not to forget creation of sparse files with few disk consumption.
For testing zisofs i have this in a script:
#!/bin/bash
# 100gb with big holes
for i in {1..100}
do
echo $i | dd of=100gb bs=1 seek="$i"G 2>/dev/null
done
The resulting file "100gb" occupies 404 KB in an ext4 filesystem.
(It shall not contain entirely zeros. So it is not the smallest possible
100 GiB file.)
Have a nice day :)
Thomas
