Linux Shells by Example

dd—converts a file while copying it

dd [--help] [--version] [if=file] [of=file][ibs=bytes] [obs=bytes]
   [bs=bytes] [cbs=bytes] [skip=blocks] [seek=blocks] [count=blocks]
   [conv={ascii,ebcdic,ibm,block,unblock,lcase,ucase,swab,noerror,notrunc, ync}]

Copies a file from one place to another, most commonly to and from tape drives or from different operating systems.

Example A.19.

1 $ dd --help 2 $ dd if=inputfile of=outputfile conv=ucase

Explanation

1. Prints all options and flags with a short description of each.

2. Converts all characters in inputfile to uppercase and sends output to outputfile.