Linux / UNIX: Create Large 1GB Binary Image File With dd Command

To create a large 1 GB binary image file with the dd command on a Linux or UNIX system, you can use the following command:

dd if=/dev/zero of=OUTPUT_FILE bs=1M count=1024

Replace OUTPUT_FILE with the desired filename for the image file.

This command will create a new file named OUTPUT_FILE that is 1 GB in size. It does this by reading 1024 1 MB blocks of zeros from the /dev/zero device and writing them to the output file.

You can also use the /dev/urandom device to create a file filled with random data instead of zeros. For example:

dd if=/dev/urandom of=OUTPUT_FILE bs=1M count=1024