Create a big file on Linux

Sometimes we need to have a random file of given size. We can name some common examples such as
On Linux we can create an empty file of particular size with the `dd` command. The following command creates `sample.txt` file of `1GB`:
$ dd if=/dev/urandom of=sample.txt bs=1G count=1
The file size is the result of `bs * count` in bytes.

See also