DD(1) DD(1) dd - dd []... dd , . bs= (: 512); ibs obs cbs= conv= count=N N ibs= (: 512) if= stdin iflag= obs= (: 512) of= stdout oflag= seek=N ( oseek=N) N obs skip=N ( iseek=N) N ibs status= , stderr; <> -- , , <> -- , <> -- : c =1, w =2, b =512, kB =1000, K =1024, MB =1000*1000, M =1024*1024, xM =M, GB =1000*1000*1000, G =1024*1024*1024 T, P, E, Z, Y, R, Q. : KiB=K, MiB=M . N 'B', , . : ascii EBCDIC ASCII ebcdic ASCII EBCDIC ibm ASCII EBCDIC block cbs unblock cbs lcase ucase sparse , NUL swab sync NUL ibs; block unblock NUL excl , nocreat notrunc noerror fdatasync fsync , : append ( ; conv=notrunc) direct - directory , dsync - sync , fullblock ( iflag) nonblock - noatime nocache . . oflag=sync noctty nofollow USR1 <
> - . : --help --version Paul Rubin, David MacKenzie Stuart Kemp. GNU coreutils: - (C) 2024 Free Software Foundation, Inc. GPLv3+: GNU GPL 3 . : . , , . . : info '(coreutils) dd invocation' Yuri Chornoivan ; , GNU General Public License Version 3 . . , , : . GNU coreutils 9.5 2024 DD(1)