Linux DD Command

Syntax: DD [Options]

if = input file (or device name).

of = output file (or device name).

IBS = Bytes Reads bytes bytes At a time, that is, the number of bytes read into the buffer.

Skip = Blocks skips the ibs*blocks block that reads into the beginning of the buffer.

Obs = bytes Writes bytes bytes At a time, that is, the number of bytes written to the buffer.

BS = bytes Sets the number of bytes in the read/write buffer (equal to the set IBS and OBS).

CBS = Byte converts bytes bytes at a time.

The count=blocks only copies the input blocks blocks.

CONV = ASCII Converts the EBCDIC code to Ascil code.

Conv = EBCDIC converts ascil code to EBCDIC code.

CONV = IBM converts ascil code to alternate EBCDIC code.

CONV = Block Converts the change bit to a fixed character.

CONV = Ublock Converts the fixed bit into a change bit.

CONV = UCase Converts the letter from lowercase to uppercase.

CONV = LCase converts letters from uppercase to lowercase.

CONV = Notrunc does not truncate the output file.

CONV = swab swaps each pair of input bytes.

CONV = NoError does not stop processing when an error occurs.

Conv = sync puts the size of each input record to the size of the IBS (filled with nul).

Linux DD Command