Изучаем команды Linux: dd

dd if=/dev/urandom of=/dev/sda bs=4k

dd if=/dev/sda of=/dev/sdb bs=4096

dd if=/dev/zero of=/dev/sda bs=4k

dd if=inputfile of=/dev/st0 bs=32k conv=sync

dd if=/dev/st0 of=outfile bs=32k conv=sync

dd if=/dev/sda | hexdump -C | grep [^00]

dd if=/dev/urandom of=/home/$user/hugefile\
bs=4096

ls -l myfile
-rw-r--r-- 6703104 Oct 31 18:25 myfile
dd if=/dev/urandom of=myfile bs=6703104 count=1

dd if=/dev/sda3 of=/dev/sdb3 bs=4096 \
conv=notrunc,noerror

dd if=/proc/filesystems | hexdump -C | less

dd if=/proc/partitions | hexdump -C | less

dd if=/dev/sdb2 ibs=4096 | gzip > partition.image.gz \
conv=noerror

dd bs=10240 cbs=80 conv=ascii,unblock\
 if=/dev/st0 of=ascii.out

dd if=/dev/st0 ibs=1024 obs=2048 of=/dev/st1

dd if=/dev/zero of=/dev/null bs=100M count=100
100+0 records in
100+0 records out
10485760000 bytes (10 GB) copied,

5.62955 s, 1.9 GB/s

dd if=/dev/zero of=/dev/sda bs=512 count=2
fdisk -s /dev/sda
dd if=/dev/zero of=/dev/sda seek=\
(number_of_sectors - 20) bs=1k

dd if=/home/$user/bootimage.img of=/dev/sdc

dd if=/dev/sda of=/dev/null bs=1m

dd if=/dev/sda of=/dev/fd0 bs=512 count=1

dd if=/dev/sda1 of=/dev/sdb1 bs=4096

dd if=/dev/sr0 of=/home/$user/mycdimage.iso\
 bs=2048 conv=nosync

mount -o loop /home/$user/mycdimage.iso\
 /mnt/cdimages/

dd if=/dev/sda2 of=/home/$user/hddimage1.img\
 bs=1M count=4430
dd if=/dev/sda2 of=/home/$user/hddimage2.img\
 bs=1M count=8860
[...]

dd if=/$location/hddimage1.img of=/dev/sda2\
 bs=1M
dd if=/$location/hddimage2.img of=/dev/sda2\
 seek=4430 bs=1M
dd if=/$location/hddimage3.img of=/dev/sda2\
 seek=8860 bs=1M
[и так далее...]

dd if=/dev/zero count=1 bs=1024 seek=1 of=/dev/sda6

dd if=/dev/zero count=1 bs=4096 seek=0 of=/dev/sda5 

dd if=/home/$user/suspicious.doc | clamscan -

dd if=/home/$user/binary file | hexdump -C | less

dd if=/home/$user/bigfile of=/dev/null
dd if=/dev/zero of=/home/$user/bigfile \
bs=1024 count=1000000

dd if=/dev/sda of=/dev/sda

dd if=/dev/mem | strings | grep 'string_to_search'

dd if=/dev/fd0 of=/home/$user/floppy.image\
 bs=2x80x18b conv=notrunc

dd if=/proc/kcore | hexdump -C | less

dd if=/proc/filesystems | hexdump -C | less

dd if=/proc/kallsyms | hexdump -C | less

dd if=/proc/interrupts | hexdump -C | less

dd if=/proc/uptime | hexdump -C | less

dd if=/proc/partitions | hexdump -C | less

dd if=/proc/meminfo | hexdump -C | less

dd if=/dev/urandom of=/home/$user/myrandom \
bs=100 count=1

dd if=/dev/mem of=/home/$user/mem.bin\
 bs=1024

dd if=/home/$user/myfile

dd if=/dev/sda2 bs=16065 | hexdump -C\
 | grep 'text_to_search'

dd if=/home/$user/file.bin skip=64k bs=1\
 of=/home/$user/convfile.bin

dd if=/home/$user/bootimage.img of=/dev/sdc 

dd if=/dev/mem bs=1k skip=768 count=256 \
2>/dev/null | strings -n 8 

dd bs=1k if=imagefile.nrg of=imagefile.iso skip=300k

echo -n "hello vertical world" | dd cbs=1 \
conv=unblock 2> /dev/null

dd if=/dev/sda1 | gzip -c | split -b 2000m - \
/mnt/hdc1/backup.img.gz

cat /mnt/hdc1/backup.img.gz.* | gzip -dc |\
 dd of=/dev/sda1

dd if=/dev/zero of=myimage bs=1024 count=10240

dd ibs=10 skip=1

dd bs=265b conv=noerror if=/dev/st0 \
of=/tmp/bad.tape.image

dd if=/dev/sda count=1 | hexdump -C

dd if=/dev/sda | nc -l 10001 
nc $system_to_backup_IP 10001 | dd\
 of=sysbackupsda.img 

dd if=/dev/zero of=/dev/sdX\
 bs=1024000 count=1

dd if=/dev/zero of=tmpswap bs=1k\
 count=1000000
chmod 600 tmpswap
mkswap tmpswap
swapon tmpswap

dd if=/dev/sda of=/dev/null bs=1024k \
count=1024
1073741824 bytes (1.1 GB) copied, 
24.1684 s, 44.4 MB/s

dd if=/dev/random count=1 2>/dev/null | od -t u1 |\
 awk '{ print $2}' | head -1

dd if=/dev/mem of=myRAM bs=1024

dd if=/dev/sda bs=512 count=1 | od -xa

dd if=/my/old/mbr of=/dev/sda bs=446 count=1

dd if=/dev/sda1 | split -b 700m - sda1-image

ls -l | dd conv=ucase

echo "MY UPPER CASE TEXT" | dd conv=lcase

dd if=/etc/passwd cbs=132 conv=ebcdic of=/tmp/passwd.ebcdic

dd if=text.ascii of=text.ebcdic conv=ebcdic

dd if=myfile of=myfile conv=ucase