Create File Of Any Size in Linux Using DD Command

How do I create a file of any given size on Linux?
using the dd command.

$ dd if=/dev/zero of=testss bs=1024 count=1048576

This will create a file of size 1024 * 1048576 bytes (or 1 GB).
where
if - input file
of - output file or the file to be created
bs - block size in bytes
count - # of blocks of size bs

Easiest and fasted way to create file of 250GB using DD command

$ dd if=/dev/zero of=tests bs=1 count=0 seek=250G

read dd(1) - Linux man page

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