Let me just spend the next 15 minutes reading the man page for dd. But before that, let me figure out what a terminal is. A few minutes later... "The dd utili

Let me just spend the next 15 minutes reading the man page for dd. But before that, let me figure out what a terminal is. A few minutes later... "The dd utility copies the standard input to the standard output. Input data is read and written in 512-byte blocks. If input reads are short, input from multiple reads are aggregated to form the output block. When finished, dd displays the number of complete and partial input and output blocks and truncated input records to the standard error output." Excuse me, what?