dd - copy blocks of data
$ dd if=[input_file] of=[output_file] [args...]
dd
is an application used to write blocks of data from one file to another. A common use case for dd
is to make a bootable hard drive from a ISO file.
--help
: Display help message and exitif
: input file (or device) to read fromof
: output file (or device) to write tobs
: block size (of bytes) to usecount
: number of blocks to write$ dd if=/dev/zero of=./zeros bs=1M count=1