DD(1)                         Cac cau l<?>nh                             DD(1)

TEN
       dd - convert and copy a file

TOM T<?>T
       dd [TOAN_H<?>NG]<?>
       dd TUY_CH<?>N

MO T<?>
       Sao chep t<?>p tin, chuy<?>n d<?>i va d<?>nh d<?>ng theo cac toan
       h<?>ng.

       bs=BYTES
              d<?>c va ghi BYTES byte m<?>i l<?>n(m<?>c d<?>nh: 512); de ibs
              va obs

       cbs=BYTES
              chuy<?>n d<?>i BYTES byte m<?>i l<?>n

       conv=CONVS
              chuy<?>n d<?>i t<?>p tin tuy theo danh sach cac ky hi<?>u, phan
              cach nhau b<?>i d<?>u ph<?>y

       count=S<?>
              ch<?> sao chep S<?> kh<?>i d<?>u vao

       ibs=BYTES
              d<?>c BYTES byte m<?>i l<?>n (m<?>c d<?>nh: 512)

       if=T<?>P_TIN
              d<?>c t<?> T<?>P_TIN thay cho d<?>u vao tieu chu<?>n

       iflag=C<?>
              d<?>c tuy theo danh sach cac ky hi<?>u phan cach b<?>i d<?>u
              ph<?>y

       obs=BYTES
              ghi BYTES byte m<?>i l<?>n (m<?>c d<?>nh: 512)

       of=T<?>P_TIN
              ghi vao T<?>P_TIN thay cho d<?>u ra tieu chu<?>n

       oflag=C<?>
              ghi tuy theo danh sach cac ky hi<?>u phan cach b<?>i d<?>u
              ph<?>y

       seek=N (or oseek=N) skip N obs-sized output blocks

       skip=N (or iseek=N) skip N ibs-sized input blocks

       status=M<?>C
              M<?>C thong tin in ra d<?>u ra l<?>i; "none" ch<?>n t<?>t c<?>
              nhung tr<?> cac thong bao l<?>i, "noxfer" b<?> di th<?>ng ke
              truy<?>n t<?>i, "progress" tm cac th<?>ng ke truy<?>n t<?>i
              d<?>nh k<?>

       N and BYTES may be followed by the following multiplicative suffixes:
       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, and so on for T, P, E, Z, Y, R, Q.
       Binary prefixes can be used, too: KiB=K, MiB=M, and so on.  If N ends
       in 'B', it counts bytes not blocks.

       M<?>i ky hi<?>u CONV co th<?> la:

       ascii  t<?> EBCDIC t<?>i ASCII

       ebcdic t<?> ASCII t<?>i EBCDIC

       ibm    t<?> ASCII t<?>i EBCDIC thay th<?>

       block  them m<?>c ghi d<?>ng dong m<?>i v<?>i kho<?>ng tr<?>ng d<?>n
              kich c<?> cbs

       unblock
              thay th<?> kho<?>ng tr<?>ng theo sau trong m<?>c ghi kich c<?>
              cbs b<?>ng dong m<?>i

       lcase  thay d<?>i ch<?> HOA thanh ch<?> thu<?>ng

       ucase  thay d<?>i ch<?> thu<?>ng thanh ch<?> HOA

       sparse try to seek rather than write all-NUL output blocks

       swab   trao d<?>i m<?>i c<?>p byte dua vao

       sync   them m<?>i kh<?>i d<?>u vao v<?>i NUL d<?>n kich thu<?>c ibs;
              khi s<?> d<?>ng v<?>i block ho<?>c unblock, them b<?>ng kho<?>ng
              tr<?>ng thay vi NUL

       excl   l<?>i n<?>u t<?>p tin k<?>t qu<?> da co

       nocreat
              khong t<?>o t<?>p tin k<?>t qu<?>

       notrunc
              khong c<?>t ng<?>n t<?>p tin k<?>t qu<?>

       noerror
              ti<?>p t<?>c sau khi g<?>p l<?>i d<?>c

       fdatasync
              ghi v<?>t ly d<?> li<?>u t<?>p tin k<?>t qu<?> len dia tru<?>c
              khi thoat

       fsync  nhu tren, nhung d<?>ng th<?>i ghi c<?> sieu d<?> li<?>u

       M<?>i ky hi<?>u C<?> co th<?> la:

       append ch<?> d<?> n<?>i them (ch<?> co ich cho d<?>u ra; cung d<?>
              ngh<?> "conv=notrunc")

       direct s<?> d<?>ng I/O tr<?>c ti<?>p cho d<?> li<?>u

       thu m<?>c
              khong thanh cong n<?>u khong ph<?>i thu m<?>c

       dsync  dung I/O da d<?>ng b<?> cho d<?> li<?>u

       sync   nhu tren, nhung d<?>ng th<?>i cho c<?> sieu d<?> li<?>u

       fullblock
              tich luy cac kh<?>i d<?>y d<?> d<?> li<?>u d<?>u vao (ch<?>
              iflag)

       nonblock
              s<?> d<?>ng I/O khong d<?>t kh<?>i

       noatime
              khong c<?>p nh<?>t gi<?> truy c<?>p

       nocache
              Yeu c<?>u xoa b<?> nh<?> d<?>m.  Cung nen xem oflag=sync

       noctty khong <?>n d<?>nh thi<?>t b<?> cu<?>i di<?>u khi<?>n t<?> t<?>p
              tin

       nofollow
              khong di theo lien k<?>t m<?>m

       G<?>i m<?>t tin hi<?>u USR1 d<?>n ti<?>n trinh dd dang ch<?>y d<?> lam
       cho no in th<?>ng ke vao ra d<?>n d<?>u ra l<?>i chu<?>n va sau do
       ti<?>p t<?>c sao chep.

       Cac tuy ch<?>n la:

       --help hi<?>n th<?> tr<?> giup nay r<?>i thoat

       --version
              dua ra thong tin phien b<?>n r<?>i thoat

TAC GI<?>
       Vi<?>t b<?>i Paul Rubin, David MacKenzie va Stuart Kemp.

THONG BAO L<?>I
       Tr<?> giup tr<?>c tuy<?>n GNU coreutils:
       <https://www.gnu.org/software/coreutils/>
       Report any translation bugs to <https://translationproject.org/team/>

B<?>N QUY<?>N
       Copyright (C) 2024 Free Software Foundation, Inc.  Gi<?>y phep GPL pb3+
       : Gi<?>y phep Cong c<?>ng GNU phien b<?>n 3 hay sau
       <https://gnu.org/licenses/gpl.html>.
       Day la ph<?>n m<?>m t<?> do: b<?>n co quy<?>n s<?>a d<?>i va phat hanh
       l<?>i no. KHONG CO B<?>O HANH GI C<?>, v<?>i di<?>u khi<?>n du<?>c phap
       lu<?>t cho phep.

XEM THEM
       Tai li<?>u d<?>y d<?> co t<?>i:
       <https://www.gnu.org/software/coreutils/dd>
       ho<?>c s<?>n co n<?>i b<?> thong qua: info '(coreutils) dd invocation'

D<?>CH
       B<?>n d<?>ch ti<?>ng Vi<?>t c<?>a trang hu<?>ng d<?>n nay do

       th<?>c hi<?>n.

       B<?>n d<?>ch nay la Tai li<?>u Mi<?>n phi; d<?>c Gi<?>y phep Cong
       c<?>ng GNU Phien b<?>n 3 <https://www.gnu.org/licenses/gpl-3.0.html>
       ho<?>c m<?>i hon d<?> bi<?>t cac di<?>u kho<?>n b<?>n quy<?>n.  Chung
       toi cho r<?>ng KHONG CO TRACH NHI<?>M PHAP LY.

       N<?>u b<?>n tim th<?>y m<?>t s<?> sai sot trong b<?>n d<?>ch c<?>a
       trang hu<?>ng d<?>n nay, vui long g<?>i thu d<?>n TODO <>.

GNU coreutils 9.5             Thang 3 nam 2024                           DD(1)