Basic usage with help

dd ${help}

Display help message

dd --help

Read from `/dev/urandom`, 2*512 Bytes, and put it into `/tmp/test.txt`. Note: each iteration reads 512 bytes (the selected block size).

dd if=/dev/urandom of=/tmp/test.txt count=2 bs=512

Watch the progress of dd(1).

dd if=/dev/zero of=/dev/null bs=4KB &

cheat.sheets: dd

export dd_pid=`pgrep '^dd'`

cheat.sheets: dd

while [[ -d /proc/$dd_pid ]]; do

cheat.sheets: dd

kill -USR1 $dd_pid && sleep 1

cheat.sheets: dd

clear

cheat.sheets: dd

done

Watch the progress of dd(1) with pv(1) and dialog(1), both of which can be installed with the following command: apt-get install pv dialog

(

cheat.sheets: dd

pv -n /dev/zero | dd of=/dev/null bs=128M conv=notrunc,noerror

cheat.sheets: dd

) 2>&1 | dialog --gauge "Running dd command (cloning), please wait..." 10 70 0

Watch the progress of dd(1) with pv(1) and zenity(1), both of which can be installed with the following command: apt-get install pv zenity

(

cheat.sheets: dd

pv -n /dev/zero | dd of=/dev/null bs=128M conv=notrunc,noerror

cheat.sheets: dd

) 2>&1 | zenity --title 'Cloning with dd(1) -- please wait...' --progress

Watch the progress of dd(1) with the built-in `progress` functionality, - introduced in CoreUtils v8.24.

dd if=/dev/zero of=/dev/null bs=128M status=progress

DD with "graphical" return

dcfldd if=/dev/zero of=/dev/null bs=500K

This will output the sound from your microphone port to the ssh target computer's speaker port. The sound quality is very bad, so you will hear a lot of hissing.

dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp

Show current progress without interruption (USR1)

dd if=/dev/zero of=/dev/null & pid=$!

cheat.sheets: dd

kill -USR1 $pid

Create a 1GiB file with nothing but zeros, ready to mkswap(8) it.

dd if=/dev/zero of=/swapfile count=1048576 bs=1024 status=progress