Create file with size for testing purpose

Have you guys even need to have some file with size and its content not neccessary! Here it is

$ dd if=/dev/zero of=output.dat bs=1024 count=10240

now we get file
-- name : output.dat
-- size :1024 * 10240 -> ~10mb

Thanks for (http://linuxcommando.blogspot.com/2008/02/create-file-of-given-size.html)

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