dd

Usage: dd [OPTION]...

Copy a file, converting and formatting according to options.

Options:

			if=FILE Read from FILE instead of stdin
			of=FILE Write to FILE instead of stdout
			bs=N    Read and write N bytes at a time
			count=N Copy only N input blocks
			skip=N  Skip N input blocks
			seek=N  Skip N output blocks
		

Numbers may be suffixed by w (x2), k (x1024), b (x512), or M (x1024^2).

Example:

			$ dd if=/dev/zero of=/dev/ram1 bs=1M count=4
			4+0 records in
			4+0 records out