What is the standard syntax of dd?
dd if=/dev/zero of=new_file bs=1024 count=1
if=file
the input file
default is standard input
of=file
output file
default is standard output
bs=size
the block size
dd reads and writes this many bytes of data at a time
can use b or k
ibs=size, obs=size
input and output block sizes
if you can use the same block size for both input and output, use the bs option, otherwise use this option
count=num
the total number of blocks to copy
skip=num
skip past the first num blocks in the input file or stream and do not copy them to the output