12 Linux dd, ddrescue and dcfldd command examples

The dd command stands for ‘data duplicator’ and is used for copying and converting data.

It is very powerful low level utility of Linux which can do much more like;  Backup and restore the entire hard disk or partition.  Backup of MBR (Master Boot Record) It can copy and convert magnetic tape format, convert between ASCII and EBCDIC formats, swap bytes and can also convert lower case to upper case.  It can also be used by Linux kernel make files to make boot images.