AtomLabs

Create file of certain size

Wish you could create a test file for file-transfer testing? It’s easy with Linux’s (dd) command:

Create 1MB file:

dd if=/dev/zero of=1MB.txt bs=1024 count=1024

Create 50MB file:

dd if=/dev/zero of=50MB.txt bs=1024 count=51200

Verify the sizes:

ls -lh | grep MB
-rw-r--r--  1 root root 1.0M Dec 23 16:06 1MB.txt
-rw-r--r--  1 root root  50M Dec 23 16:06 50MB.txt