Create test files of specific size

dd if=/dev/zero of=file_5Mb.txt bs=1k count=5120
dd if=/dev/zero of=file_7Mb.txt bs=1k count=7168
dd if=/dev/zero of=file_8Mb.txt bs=1k count=8192
dd if=/dev/zero of=file_8.8Mb.txt bs=1k count=9011
dd if=/dev/zero of=file_9Mb.txt bs=1k count=9216

ls ./file_* -lah
-rw-r--r-- 1 rob disk 5,0M feb 20 14:30 ./Desktop/file_5Mb.txt
-rw-r--r-- 1 rob disk 7,0M feb 20 15:00 ./Desktop/file_7Mb.txt
-rw-r--r-- 1 rob disk 8,8M feb 20 14:55 ./Desktop/file_8.8Mb.txt
-rw-r--r-- 1 rob disk 8,0M feb 20 15:01 ./Desktop/file_8Mb.txt
-rw-r--r-- 1 rob disk 9,0M feb 20 14:42 ./Desktop/file_9Mb.txt

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